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RESTDf:AT1PN NIo EIi XAMCEM MMVTTEE [ERcI HAS DETERMINED TRAY THE PROPOS f CAN 6E MITIGATED THROUGH MITIGPTIDN MERSURES, THE CIN OF RENTON ENVIRONMENTAL REVIEW CO T ""ALTS THA' S:OP P,m, an Marty li. ACTION HAS PROBABLE SIGNIPICAN 6e Rletl In wHdn`Pn ar 6efort deteTEnlnadm mutt d Aenton. 1059 soatf5 Grady W.V. Appulf of TM ln%ironlrwntal Hearin6 Exam 'SYtym, SP ober wHSI the ragUired See w C 4f AMC SYS 43trfi51P.prma Pn 2975. T, 0.PPe� N the ERymInN art RMe Derk'f ❑Hlce� ( } Renton, WA 9VA I nc.slmaY he .WITFId ham the AQIIIPn DIY re8ardln{The appea W BDC HEARVNG WILL BE SET AND ALL PARTIES APPEALED, A PIJ CERTIFICATION I: _5 �a -?AA hereby certify that copies of the above document were posted in conspicuous places or nearbythe des ibed property on Date: 2- rl Signed: STATE OF WASHINGTON j 1 SS COUNTY OF KING 1 I certify that I know or have satisfactory evidence that K r{ signed this instrument and acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in the instrument. Dated Z/ 5 Notary P,i _� � `���YtiSSt51111112 • }���y Notary (Print): = w' �'�°,�� "OU80" r CU appointment expires: 'r $-29-N - FOF vVA� lic i� and for the State of Washington J , 5 € E F E&' " `e"' �ieE€s€ €ui?4Fi:€KEi'e E�` rs °�"{/" ......,;f .. E PARI'ME �F �C}MMI�I��f„�E�(�l���t ME NTT��LANN1N�i i�liltSl�l� . 1FFJDAN ��C MALLiNG ...9 n..rr-- a, -.n , iz-.......... . , ..., t,. ..........: On the 27th day of February, 2015, 1 deposited in the mails of the United States, a sealed envelope containing SEPA Notice and Determination documents. This information was sent to: ..... .�............�.r.. ....... X4........... ,.--dµ.:A�...€ ..�R .e.. .....?�.R P 01010 p.{ Agencies See Attached Collin and Christina Fowler Owners Allen Quynn, City of Renton Applicant (Signature of Sender): STATE OF WASHINGTON COUNTY OF KING I certify that I know or have satisfactory evidence that Sabrina Mirante signed this instrument and acknowledged it to be his/her/their free and voluntary act for the us 5uand_purpose mentioned in the instrument. a 0re��°j Z vx,,, 8 29-�1AZo Dated: c,/5 1 l77 J iJ ') OJ- .. n1A\1k4 -- Notary (Print): My appointment expires: Notary'P blit in and for the State of Washingtari C' L''E' Poe Maplewood Creek Stormwater Outfall Improvements €PC�jgb; LUA15-000033, ECF, CAE template - affidavit of service by mailing AGENCY (DOE) LETTER MAILING (ERC DETERMINATIONS) Dept. of Ecology ** WDFW - Larry Fisher* Muckleshoot Indian Tribe Fisheries Dept. Environmental Review Section 1775 12th Ave. NW Suite 201 Attn: Karen Walter or SEPA Reviewer PO Box 47703 Issaquah, WA 98027 39015 —172°d Avenue SE Olympia, WA 98504-7703 Auburn, WA 98092 WSDOT Northwest Region * Duwamish Tribal Office * Muckleshoot Cultural Resources Program Attn: Ramin Pazooki 4717 W Marginal Way SW Attn: Ms Melissa Calvert King Area Dev. Serv., MS -240 Seattle, WA 98106-1514 39015 172nd Avenue SE PO Box 330310 Auburn, WA 98092-9763 Seattle, WA 98133-9710 US Army Corp. of Engineers * KC Wastewater Treatment Division * office of Archaeology & Historic Preservation* Seattle District Office Environmental Planning Supervisor Attn: Gretchen Kaehler Attn: SEPA Reviewer Ms. Shirley Marroquin PO Box 48343 PO Box C-3755 201 S. Jackson ST, MS KSC-NR-050 Olympia, WA 98504-8343 Seattle, WA 98124 Seattle, WA 98104-3855 Boyd Powers *** Depart. of Natural Resources PO Box 47015 Olympia, WA 98504-7015 KC Dev. & Environmental Serv. City of Newcastle City of Kent Attn: SEPA Section Attn: Tim McHarg Attn: Jack Pace 35030 SE Douglas St. 11210 Director of Community Development Acting Community Dev. Director Snoqualmie, WA 98065 12835 Newcastle Way, Ste 200 220 fourth Avenue South Newcastle, WA 98056 Kent, WA 98032-5895 Metro Transit Puget Sound Energy City of Tukwila Senior Environmental Planner Kathy Johnson, Steve Lancaster, Responsible Official Gary Kriedt 355 110th Ave NE 6200 Southcenter Blvd. 201 South Jackson Street KSC-TR-0431 Mailstop EST 11W Tukwila, WA 98188 Seattle, WA 98104-3856 Bellevue, WA 98004 Seattle Public Utilities Jailaine Madura Attn: SEPA Coordinator 700 Fifth Avenue, Suite 4900 PO Box 34018 Seattle, WA 98124-4018 *Note: If the Notice of Application states that it is an "Optional DNS", the marked agencies and cities will need to be sent a copy of the Environmental Checklist, Site Plan PMT, and the Notice of Application. **Department of Ecology is emailed a copy of the Environmental Checklist, Site Pian PMT, & Notice to the following email address: sepaunitC@ecv.wa.gov ***Department of Natural Resources is emailed a copy of the Environmental Checklist, Site Plan PMT, & Notice the following email address: sepacenter@dnr.wa.aov template - affidavit of service by mailing Joseph Riedi 4519 SE 2nd St Renton, WA 98059 Allen Cluvnn City of Renton 1055 S Grady Way Renton, WA 98057 Collin Fowler 4515 SE 2nd 5t Renton, WA 98059 Denis Law Mayr February 27, 2015 Washington State Department of Ecology Environmental Review Section PO Box 47703 Olympia, WA 98504-7703 City 0 tt� ?,\`! INC fill !r Community & Economic Development Department C.E."Chip"Vincent, Administrator Subject: ENVIRONMENTAL SEPA) THRESHOLD DETERMINATION Transmitted herewith is a copy of the Environmental Determination for the following project reviewed by the Environmental Review Committee (ERC) on February 23, 2015: SEPA DETERMINATION: Determination of Non -Significance Mitigated (DNSM) PROJECT NAME: Maplewood Creek Stormwater Outfall Improvement Project PROJECT NUMBER: LUA15-000033, ECF, CAE Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 13, 2015, together with the required fee with: Nearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and information regarding the appeal process may be obtained from the City Clerk's Office, (425) 430-6510. Please refer to the enclosed Notice of Environmental Determination for complete details. If you have questions, please call me at (425) 430-6593. For the Environmental Review Committee, Kris Sorensen Associate Planner Enclosure cc: King County Wastewater Treatment Division Ramin Paxooki, WSDOT, NW Region Boyd Powers, Department of Natural Resources Larry Fisher, WDFW Karen Walter, Fisheries, Muckleshoot Indian Tribe Duwamish Tribal Office Melissa Calvert, Muckleshoot Cultural Resources Program U5 Army Corp. of Engineers Gretchen Kaehler, Office of Archaeology & Historic Preservation Renton City Hall • 1055 South Grady Way • Renton, Washington 98057 . rentonwa.gov DEPARTMENT OF COMMUNE City of Y ,,,, �, �� --��� AND ECONOMIC DEVELOPMENT ';� ;:' ENVIRONMENTAL (SEPA) DETERMINATION OF NON -SIGNIFICANCE - MITIGATED (DNS -M) PROJECT NUMBER: LUA15-000033, ECF, CAE APPLICANT: City of Renton Stormwater Utility, Allen Quynn PROJECT NAME: Maplewood Creek Stormwater Outfall Improvement Project PROJECT DESCRIPTION: The City of Renton is requesting Environmental (SEPA) Review and a Critical Areas Exemption to re-route two stormwater outfalls that currently discharge at the top of a hillside slope to be routed in the right-of-way subsurface to the intersection of Chelan Ave SE and SE 2nd Place where a new outfall will be constructed in the southwest corner of private property 4515 SE 2nd St (PID 2816300100). Stormwater would be piped from the outfall to the bottom of the hillside, just west of the Maplewood Creek Class 3 stream and nearby Category 3 wetland. Approximate areas of work are 3,200 sf of public right-of-way and 1,300 sf of private property, all within the Residential -8 zone designation. The outfalls near SE 4th PI have resulted in erosion of the hillside and bank of the stream and would be capped and abandoned. Stormwater flow would be re-routed to the north within the Chelan street right-of-way through approximately 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and SE 2nd Place, then directed 32 feet in length of new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 16 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. No trees would be impacted. Critical areas include the stream, wetland, aquifer protection area, regulated slopes, and erosion hazards. The project would result in temporary impacts of 1,200 sf of critical areas buffers for site access and construction. The new overland pipe, outfall, and energy dissipater pad will result in 155 sf of permanent buffer impact. Approximately 1,355 sf of buffer restoration and enhancement are proposed. Studies provided are a geotechnical report, hydrologic/hydraulic analysis, and supplemental wetland and stream study and buffer restoration plan. PROJECT LOCATION: The private property at 4515 SW 2nd St and the Stormwater facilities along the public right-of-way of Chelan Ave SE between SE 4th PI and SE 2nd PI. LEAD AGENCY: City of Renton Environmental Review Committee Department of Community & Economic Development The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse impact on the environment. An Environmental Impact Statement (EIS) is not required under RCW 43.21C.030(2)(c). Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4-9-070D Renton Municipal Code. These conditions are necessary to mitigate environmental impacts identified during the environmental review process. Because other agencies of jurisdiction may be involved, the lead agency will not act on this proposal for fourteen (14) days. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 13, 2015. Appeals must be filed in writing together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and more information may be obtained from the Renton City Clerk's Office, (425) 430-6510. PUBLICATION DATE: February 27, 2015 City of DEPARTMENT OF COMMUNE i Y D � AND ECONOMIC DEVELOPMENT DATE OF DECISION: FEBRUARY 23, 2015 SIGNATURES: Of lmmw�,— Gregg Zininlen, Administrator Ma Pe ers n Administrator Public Works Department Date Fire & Emergency Services Date �� Terry Higashiyama, Administrator Community Services Department C.E. "Chip" Vincent, Administrator Date Department of Community & Economic Development Date w DEPARTMENT OF CO- ____IUNITY Giryolf _ AND ECONOMIC DEVELOPMENT DETERMINATION OF NON -SIGNIFICANCE -MITIGATED (DNSM) MITIGATION MEASURES AND ADVISORY NOTES PROJECT NUMBER: LUA15-000033, ECF, CAE APPLICANT: City of Renton Stormwater Utility, Allen Quynn PROJECT NAME: Maplewood Creek Stormwater Outfall Improvement Project PROJECT DESCRIPTION: City of Renton requests SEPA Review and a Critical Areas Exemption to re-route two stormwater outfalls that discharge at the top of a hillside to be routed in the right-of-way subsurface to the intersection of Chelan Ave SE and SE 2nd Place where a new outfall will be constructed in the southwest corner of private property 4515 SE 2nd St. Stormwater would be piped from the outfall to the bottom of the hillside, just west of the Maplewood Creek Class 3 stream and nearby Category 3 wetland. Approximate areas of work are 3,204 sf of public ROW and 1,300 sf of private property, within the Residential -8 zone. The outfalls near SE 4th PI would be capped and abandoned. Stormwater flow would be re- routed to the north within the Chelan street ROW through 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and SE 2nd Place, then directed 32 feet in length of new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 15 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. The project would result in temporary impacts of 1,200 sf of critical areas buffers for site access and construction. The project will result in 155 sf of permanent stream and wetland buffer impact. 1,355 sf of buffer restoration and enhancement are proposed. PROJECT LOCATION: The private property at 4515 SW 2nd St and the stormwater facilities along the public right-of-way of Chelan Ave SE between S€ 4th PI and SE 2nd PI. LEAD AGENCY: The City of Renton Department of Community & Economic Development Planning Division MITIGATION MEASURES: 1. The applicant shall have a Final Geotechnical Engineering Report prepared prior to the project construction. All work shall follow the recommendation included in the Final Geotechnical Engineering Report. 2. The applicant shall receive a critical areas exemption for work in the regulated critical areas. 3. The project shall follow the recommendations of the technical memorandum hydrologic/hydraulic analysis and preliminary design. 4. The project shall follow the recommendations of the supplemental wetland and stream study and buffer restoration plan. A memorandum from Shannon & wilson, or qualified biologist, shall be provided within a reasonable time period to provide an overall assessment of the planting and restoration area based on the goals of the proposal, and to recommend if targeted herbicide application is recommended to be used. ADIVISORY NOTES: The following notes are supplemental information provided in conjunction with the administrative land use action. Because these notes are provided as information only, they are not subject to the appeal process for the land use actions. Planning Review Comments Kris Sorensen 1425-430-6593 1 ksorensen@rentonwa.gov Recommendations: Planning: 1. RMC section 4 4 030.C.2 limits haul hours between 8:30 am to 3:30 pm, Monday through Friday unless otherwise approved by the Development Services Division. 2. Commercial, multi family, new single family and other nonresidential construction activities shall be restricted to the flours between seven o'clock (7:00) a.m. and eight o'clock (8:00) p.m., Monday through Friday. Work on Saturdays shall be restricted to the hours between nine o'clock (9:00) a.m. and eight o'clock (8:00) p.m. No work shall be permitted on Sundays. 3. Within thirty (30) days of completion of grading work, the applicant shall hydroseed or plant an appropriate ground cover over any portion of the site that is graded or cleared of vegetation and where no further construction work will occur within ninety (90) days. Alternative measures such as mulch, sodding, or plastic covering as specified in the current King County Surface Water Management Design Manual as adopted by the City of Renton may be proposed between the dates of November 1st and March 31st of each year. The Development Services Division's approval of this work is required prior to final inspection and approval of the permit. 4. The applicant may not fill, excavate, stack or store any equipment, dispose of any materials, supplies or fluids, operate any equipment, install impervious surfaces, or compact the earth in any way within the area defined by the drip line of any tree to be retained. 5. If machinery is used near existing trees on the 4515 SE 2nd St parcel, the applicant shall erect and maintain six foot (6') high chain link temporary construction fencing around the drip lines of all retained trees, or along the perimeter of a stand of retained trees. Placards shall be placed on fencing every fifty feet (50') indicating the words, "NO TRESPASSING — Protected Trees" or on each side of the fencing if less than fifty feet (50'). Site access to individually protected trees or groups of trees shall be fenced and signed. Individual trees shall be fenced on four (4) sides. In addition, the applicant shall provide supervision whenever equipment or trucks are moving near trees. Technical Services Comments Bob MacOnie 1425-430-7369 1 bmaconie@rentonwa.gov Recommendations: Bob Mac Onie 1/23/2015 ERC Mitigation Measures and Advisory Notes Page 2 of 3 There is no mention of any re mediation of the areas damaged by the existing outfalls. Is it wise to leave the failed infrastructure in place and just cap the pipes. What is the issue with removal of the exposed down slope pipes and remediation of the disturbed surface? ERC Mitigation Measures and Advisory Notes Page 3 of 3 Department of Comm----ity and Economic Developmen, NOTICE OF ENVIRONMENTAL DETERMINATION ENVIRONMENTAL REVIEW COMMITTEE RENTON, WASHINGTON The Environmental Review Committee has issued a Determination of Non -Significance Mitigated (DNS -M) for the following project under the authority of the Renton municipal code. Maplewood Creek Stormwater Outfall Improvements Project LUA15-000033 Location: 4515 SE 2nd St. City of Renton requests SEPA Review and a Critical Areas Exemption to re-route two stormwater outfalls that discharge at the top of a hillside to be routed in the right-of-way subsurface to the intersection of Chelan Ave SE and SE 2nd Place where a new outfall will be constructed in the southwest corner of private property 4515 SE 2nd St. Stormwater would be piped from the outfall to the bottom of the hillside, just west of the Maplewood Creek Class 3 stream and nearby Category 3 wetland. Approximate areas of work are 3,200 sf of public ROW and 1,300 sf of private property, within the Residential -8 zone. The outfalls near SE 4th PI would be capped and abandoned. Stormwater flow would be re-routed to the north within the Chelan street ROW through 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and SE 2nd Place, then directed 32 feet in length of new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 16 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. The project would result in temporary impacts of 1,200 sf of critical areas buffers for site access and construction. The project will result in 155 sf of permanent stream and wetland buffer impact. 1,355 sf of buffer restoration and enhancement are proposed. Appeals of the DNS -M must be filed in writing on or before 5:00 p.m. on March 13, 2015. Appeals must be filed in writing together with the required fee with: Hearing Examiner c/o City Clerk, City of Renton, 1055 S Grady Way, Renton, WA 98057. Appeals to the Hearing Examiner are governed by RMC 4-8-110 and more information may be obtained from the Renton City Clerk's Office, 425-430-6510. Publication Date: February 27, 2015 Denis Law - -- City of", Y � Mayor S — �... �4r?� �!1d February 26, 2015 Community & Economic Development Department C.E."Chip"Vincent, Administrator Allen Quynn City of Renton 1055 S Grady Way Renton, WA 98057 SUBJECT: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION Maplewood Creek Stormwater Outfall Improvement Project, LUA15-000033, ECF, CAE Dear Mr. Quynn: This letter is written on behalf of the Environmental Review Committee (ERC) to advise you that they have completed their review of the subject project and have issued a threshold Determination of Non -Significance -Mitigated with Mitigation Measures. Please refer to the enclosed ERC Report, for a list of the Mitigation Measures. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 13, 2015, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and information regarding the appeal process may be obtained from the City Clerk's Office, (425) 430-6510. If the Environmental Determination is appealed, a public hearing date will be set and all parties notified. if you have any further questions, please call me at (425) 430-6593. For the Environmental Review Committee, jeu,vf svet,-��� Kris Sorensen Associate Planner Enclosure cc: Colin & Christina Fowler / owner(s) Joseph Riedi / Party(les) of Record Renton City Hall . 1055 South Grady Way • Renton, Washington 98057 • rentonwa.gov j a DEPARTMENT OF COMMUNI I.� City of ; AND ECONOMIC DEVELOPMENT w ENVIRONMENTAL REVIEW COMMITTEE REPORT ERC MEETING DATE: February 23, 2015 Project Name: Maplewood Creek Stormwater Outfall Improvement Project Project Number: LUA15-000033, ECF, CAE Project Manager: Kris Sorensen, Associate Planner Owners of private PID 281630-0100: Collin & Christina Fowler; 4515 SE 2"0 St; Renton WA 98059 property and public right- of-way: Right -of -Way: City of Renton Applicant/Contact: City of Renton Stormwater Utility; Attn: Allen CLuynn; 1055 S Grady Way, 5th Floor; Renton WA 98057 Project Location: The private property at 4515 SW 2nd St and the Stormwater facilities along the public right-of-way of Chelan Ave SE between SE 4`h PI and SE 2"d PI. Project Summary: The City of Renton is requesting Environmental (SEPA) Review and a Critical Areas Exemption to re-route two stormwater outfalls that currently discharge at the top of a hillside slope to be routed in the right-of-way subsurface to the intersection of Chelan Ave SE and SE 2nd Place where a new outfall will be constructed in the southwest corner of private property 4515 SE 2nd St (PID 2816300100). Stormwater would be piped from the outfall to the bottom of the hillside, just west of the Maplewood Creek Class 3 stream and nearby Category 3 wetland. Approximate areas of work are 3,200 sf of public right-of-way and 1,300 sf of private property, all within the Residential -8 zone designation. The outfalls near SE 4th PI have resulted in erosion of the hillside and bank of the stream and would be capped and abandoned. Stormwater flow would be re- routed to the north within the Chelan street right-of-way through approximately 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and SE 2nd Place, then directed 32 feet in length of new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 16 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. No trees would be impacted. Critical areas include the stream, wetland, aquifer protection area, regulated slopes, and erosion hazards. The project would result in temporary impacts of 1,200 sf of critical areas buffers for site access and construction. The new overland pipe, outfall, and energy dissipater pad will result in 155 sf of permanent buffer impact. Approximately 1,355 sf of buffer restoration and enhancement are proposed. Studies provided are a geotechnical report, hydrologic/hydraulic analysis, and supplemental wetland and stream study and buffer restoration plan. Exist. Bldg. Area SF: N/A Proposed New Bldg. Area (footprint): N/A Proposed New Bldg. Area (gross): N/A Site Area: 42,000 sf Total Building Area GSF: N/A STAFF Staff Recommends that the Environmental Review Committee issue a Determination RECOMMENDATION: of Non -Significance - Mitigated (DNS -M). FRC Report 15-000033 City of Renton Department of Community & F mic Development virwimental Review Committee Report MAPLEWOOD CREEK STORMWATER OUTFAL PRO VEMENT PROJECT LUA15-000033, ECF, CAE Report of February 23, 2015 Page 2 of 11 Project Location Map CRC Report 15-000033 City of Renton Department of Community & F min Development MAPLEWOOD CREEK STORMWA TER OUTFAL 'ROVEMENT PROJECT Report of February 23, 2015 PART ONE: PROJECT DESCRIPTION / BACKGROUND A. EXHIBITS: -vironmental Review Committee Report LUA15-000033, ECF, CAE Page 3 of 11 Exhibit 1: Staff Report; dated February 23, 2015 Exhibit 2: Zoning Map Exhibit 3: Aerial Photo Exhibit 4: Storm Drain and Outfall Plan and Profile Drawing; Sheet C-1; Preliminary 30% Review Set; Prepared by BHC Consultants; dated August 2014 Exhibit 5: Stormwater Basin Area/System Map; Figure 2; prepared by BHC Consultants; dated June 2014 Exhibit 6: Environmental Checklist Exhibit 7: Draft Geotechnical Engineering Report, Project No. 140042, Prepared by Aspect Consulting; dated July 3, 2014 Exhibit 8: Hydrologic/Hydraulic Analysis and Preliminary Design —Technical Memorandum; Project No. 14-10291.04, prepared by BHC Consultants, dated November 24, 2014 Exhibit 9: Supplemental Wetland and Stream Study and Buffer Restoration Plan; prepared by Shannon & Wilson Inc, dated October 28, 2014 Exhibit 10: City of Renton Maps - Steep Slope Exhibit 11: City of Renton Maps - Erosion Exhibit 12: City of Renton Maps - Landslide Exhibit 13: City of Renton Maps - Streams Exhibit 14: City of Renton Maps - Aquifer Protection Area Exhibit 1S: Advisory Notes / Review Comments Exhibit 16: Wetland and Stream Delineation; Figure 5; prepared by prepared by Shannon & Wilson Inc; dated July 2014 Exhibit 17: Buffer Restoration and Enhancement Plan; Figure 6; prepared by prepared by Shannon & Wilson Inc; dated October 2014 Exhibit 18: Project Cost Estimate; prepared by BHC Consultants; dated August 22, 2014 B. GENERAL INFORMATION: 1. Owner of Record, Parcel 2816300100: 2. Owner of Chelan Ave SE Right -of -Way: 3. Zoning Designation: 4. Comprehensive Plan Land Use Designation: 5. Existing Site Use: 6. Neighborhood Characteristics: ERC Report 15-000033 Collin & Christina Fowler; 4515 SE 2"0 St; Renton WA 98059 City of Renton; Attn. Stormwater Utility, Allen Quynn 1055 S Grady Way, Renton WA 98057 Project is located in the public right-of-way and on private property zoned Residential -8 (R-8) Residential Single Family (RSF) Improved street right-of-way, public stormwater easements, and a private parcel with an existing single-family residence. City of Renton Department of Community & E MAPLEWOOD CREEK STORMWA TER OUTFA, Report of February 23, 2015 7. Access: mrc Development vironmental Review Committee Report PROVEMENT PROJECT LUA15-000033, ECF, CAE Page 4 of 11 North: Single-family Residential (R-8) East: Single-family Residential (R-8) South: Single-family Residential (R-8) West: Single-family Residential (R-8) 8. Site Area: C. HISTORICAL/BACKGROUND: Action Comprehensive Pian Zoning Annexations - 3 Heather Downs Holman Duvall South D. PUBLIC SERVICES: The project site is on the south side of the Maplewood Creek ravine where access to the project site and private property being worked within is provided through developed public streets of SE 2"d PI, SE 4th PI, and Chelan Ave SE. Project construction will occur within approximately 3,200 sf of public right-of-way and 1,300 sf of private property. The 4515 SE 2"d St property is 43,084 sf in area. Land Use File No. Ordinance No. Date N/A 5099 11/01/2004 N/A 5100 11/01/2004 N/A 3143 6/22/1977 N/A 4564 12/11/1995 N/A 5488 10/30/2009 1. Utilities: The project is the abandonment of two existing stormwater outfalls within the right-of-way and replacement of those with a single outfall approximately 750 linear feet north of the existing outfalls, where the outfall will enter private property and be connected to an overland pipe down a protected slope and connected to an energy dissipater at the bottom of the ravine. 2. Streets: Chelan Ave SE is the location of the proposed work within the public streets, between SE 4th PI to the south and SE 2"d PI to the north. Streets in the vicinity are not improved with sidewalks or planter strips. 3. Fire Protection: Fire and emergency services for the project location is provided by the City of Renton Fire Department. PART TWO: ENVIRONMENTAL REVIEW in compliance with RCW 43.21C.240, the following environmental (SEPA) review addresses only those project impacts that are not adequately addressed under existing development standards and environmental regulations. A. Environmental Threshold Recommendation Based on analysis of probable impacts from the proposal, staff recommends that the Responsible Officials: Issue a DNS -M with a 14 -day Appeal Period. FRC Report 15-000033 City of Renton Department of Community & - omic Development nvironmental Review Committee Report MAPLEWOOD CREEKSTORMWATER OUTFALL IMPROVEMENT PROJECT LUA15-000033, ECF, CAE Report of February 23, 2015 Page 5 of 11 B. Mitigation Measures 1. The applicant shall have a Final Geotechnical Engineering Report prepared prior to the project construction. All work shall follow the recommendation included in the Final Geotechnical Engineering Report. 2. The applicant shall receive a critical areas exemption for work in the regulated critical areas. 3. The project shall follow the recommendations of the Technical Memorandum Hydrologic/Hydraulic Analysis and Preliminary Design. 4. The project shall follow the recommendations of the Supplemental Wetland and Stream Study and Buffer Restoration Plan. 5. A memorandum from Shannon & Wilson, or qualified biologist, shall be provided within a reasonable time period to provide an overall assessment of the planting and restoration area based on the goals of the proposal, and to recommend if targeted herbicide application is recommended to be used. C. Environmental Impacts The Proposal was circulated and reviewed by various City Departments and Divisions to determine whether the applicant has adequately identified and addressed environmental impacts anticipated to occur in conjunction with the proposed development. Staff reviewers have identified that the proposal is likely to have the following probable impacts: 1. Earth Impacts: A Draft Geotechnical Engineering Report, prepared by Aspect Consulting, dated July 3, 2014 (Exhibit 7) and a SEPA Environmental Checklist (Exhibit 6) have been provided by the applicant. Both provide analysis of existing conditions, proposed earthwork, and impacts. Currently, the stormwater discharge from two existing stormwater outfalls at the top of the hillside east of Chelan Ave SE near SE 4`h PI are resulting in erosion of the hillside slope, which is also the west bank of Maplewood Creek. As a result of the ongoing impacts of the outfall, erosion, and sediment added to the creek, the City proposes to cap and abandon these two existing stormwater outfalls and re-route their flow northward. The re-routed pipe would connect to a new outfall structure northeast of the Chelan Ave SE and SE 2nd PI intersection, approximately 750 feet in distance to the north within the existing developed street right-of-way. At the location of the new outfall at SE 2nd PI, stormwater would be directed onto private property to the northeast where an overland pipe, just above grade, would run to the bottom of the slope for dispersion. At the discharge location the applicant has proposed a manhole which would also functions as an energy dissipater to slow the velocity of the concentrated water flows. There are existing geological hazards where the new outfall and dissipater are proposed. On either side of Maplewood Creek, there are steep slopes that drop from the top of the hillside down a ravine to the stream. The hillside where the overland pipeline would extend is approximately 73% in slope. According to the Geotechnical Report (Exhibit 7, page 2, 2.1 Surface Conditions) due to the steep inclination where the pipe will be extended down the slope, the ravine slopes are actively creeping and sliding into Maplewood Creek as identified through the evidence of several scarps and skin slides along the ravine slopes. The City of Renton mapping software identifies steep and protected slopes (Exhibit 10), erosion hazards, and landslide hazards on the private property where the stormwater facilities are to be constructed. The right-of-way of Chelan Ave SE is generally flat. Overall, mitigation of the existing erosion would be through the capping of the existing outfalls to stop further erosion and impacts. No specific mitigation to the eroded area is recommended in the project narrative or submitted studies. ERC Report 15-000033 City of Renton Department of Community & E mic Development ironmentof Review Committee Report MAPLEWOOD CREEK STORMWA TER OUTFALL IMPROVEMENT PROJECT LUA15-000033, ECF, CAE Report of February 23, 2015 Page 6 of 11 As part of the Geotechnical Report, machine and hand -drilled soil boring investigations were conducted. The three machine -drilled soil borings were conducted in the street right-of-way where fill over glacial till was generally encountered (Exhibit 7, page 2-3). The fill thickness varied from about 5 to 7.5 feet in depth. Below the fill the investigation within Chelan Ave SE encountered very dense silty sand and gravel identified as glacial till, with each machine boring terminating in glacial till at 14 feet below ground surface. Four hand - drilled soil investigations were conducted along the outfall alignment, between the location where the new stormwater pipe enters the private property the manhole dissipater facility located at the toe of the slope. The first three hand -drilled investigations found disturbed native materials to a depth of 3 feet where the consultants infer that glacial till is located (Exhibit 7, page 3). The fourth hand -drilled soil investigation, closest to the creek, encountered 8 inches of loose silty sand with organics, over clean to slightly silty gravelly sand, which appeared to be slide debris and/or stream sediments. The dynamic cone penetrometer sounding used at this fourth investigation indicated very dense soil at a depth of 6 feet where the consultants infer this depth as the depth to the undisturbed/unweathered native glacial till. No groundwater seepage was encountered (Exhibit 7, page 3). According to Draft Geotechnical Report recommendations (Exhibit 7), the proposed subsurface/buried storm pipeline within Chelan Ave SE can be constructed using conventional open -trench methods for open - trench pipeline construction (Exhibit 7, page 4). The Draft Geotechnical Report provides general recommendations regarding pipe bedding, trench backfill, structural fill used and compaction, wet weather earthwork, and temporary and permanent erosion and sediment considerations for the right-of-way work (Exhibit 7). The report also provides recommendations for trench cuts greater than 4 feet in height. The Geotechnical Report states that given the presence of other existing utilities in the roadway, it is anticipated that temporary shoring will likely be utilized to facilitate construction of the nominally 10 -foot deep storm pipeline. The Draft Geatechnical Report recommends that the outfall pipe be designed and constructed to accommodate shallow slides for the area characterized by protected slopes along Maplewood Creek (Exhibit 7, page 4). The pipe should consist of heavy -walled high-density polyethylene (HDPE) with field - welded restrained joints, and anchored at the top of the slope (Exhibit 7, page 4). The additional recommendations for the proposed work in the steep slope area cover slope stability considerations, pipe anchor at the top of the slope, and a check dam where water seepage would be prevented from daylighting on the slope face and eroding the slope soils along the outfall pipe at the top of the hillside (Exhibit 7, pages 4-6). Based on the recommendations included in the provided Draft Geotechnical Engineering Report staff recommends as a mitigation measure that a Final Geotechnical Engineering Report be prepared and that the subject project, comply with the recommendations included therein. Mitigation Measures: The applicant shall have a Final Geotechnical Engineering Report prepared prior to the project construction. All work shall follow the recommendation included in the Final Geotechnical Engineering Report, Nexus: SEPA Environmental Regulations, RMC 4-3-050 Critical Areas. 2. Water a. Wetlands, Streams, Lakes Impacts: A Supplemental Wetland and Stream Study and Buffer Restoration Plan was submitted and was prepared by Shannon & Wilson Inc, dated October 28, 2014 (Exhibit 9). The portion of the project on the private property has been identified with a regulated creek and wetland. Maplewood Creek flows within the project site ravine from the northwest to the southeast before joining the Cedar River approximately one river mile downstream. At the time of the consultant site visit, the stream channel was 12 to 23 feet in width and the wetted/water width was 5 to 7 feet wide with a water depth from 4 to 6 inches. The channel substrate is dominated by sand, gravels, and cobbles. No juvenile or adult fish were observed during the ERC Report 15-000033 City of Renton Deportment of Community & omit Development vironmentoi Review Committee Report MAPLEWOOD CREEK STORMWA TER OUTFALL IMPROVEMENT PROJECT LUA15-000033, ECF, CAF Report of February 23, 2015 Page 7 of 11 consultant's field work and no permanent fish barriers were observed (Exhibit 9, page 4). The study states that Maplewood Creek is regulated as a Class 3 stream and should be upgraded to a Class 2 stream due to the presence of trout fry fish (Exhibit 9, page 2). The City requires a 75 -foot buffer around a class 2 stream and a 100 -foot buffer around a class 3 stream per RMC 4-3-050L.5. For stream buffers falling within a regulated protected slope, as is the case for the subject proposal, the stream buffer shall extend to the boundary of the protected slope per RMC 4-3-050L.5.b.ii. With this proposal, the 75 -foot buffer is identified on the Wetland and Stream Delineation and is located further than the top of the protected slopes area (Exhibit 16 and Exhibit 10). A Category 3 wetland is identified on the project site near the shoreline of Maplewood Creek near the toe of the steep slope and within close proximity of the proposed energy dissipater (Exhibit 16). The wetland, identified as Wetland A in the Supplemental Wetland and Stream Study (Exhibit 9, page 5), is classified as a palustrine emergent wetland and a riverine wetland according to the different wetland classification systems. The consultant provides an evaluation of the vegetation, hydrology, and soils of the wetland and states that according to the Washington state wetland evaluation criteria, the wetland has low water quality functions, low hydrologic function, and moderate habitat functions (Exhibit 9, page 6). The City requires a 25 -foot buffer around the wetland per RMC 4-3-050M.6.c. The Supplemental Study states that all proposed project work and proposed structures will be located outside of the delineated wetland boundary and Maplewood Creek OHWM but will result in unavoidable temporary and permanent wetland and stream buffer impacts (Exhibit 9, page 7). The applicant is requesting an exemption for this project to locate the stormwater conveyance and dissipater structure to be allowed within the wetland and stream buffers as allowed through exemptions in the Critical Areas Ordinance (RMC 4-3-050C.5). The consultants provide an analysis of the alternatives for the portions of the project proposed within the wetland and stream buffers. They provide analysis of avoidance, minimization, and adverse impacts, restoration, and compensation. Ultimately, the consultant analysis states that avoidance is not an option. There is erosion on the hillside where the existing outfall is located which if continued, could threaten nearby residences, result in slope instability, continue to add sediment to the Creek which impacts water quality (Exhibit 9, page 7). According to the Supplemental Study, the project proposal is designed to minimize impacts to critical areas as the outfall and energy dissipater will be located in the uplands above the OHWM of the creek and outside the wetland. The proposed project would result in temporary impacts of 1,200 sf of both the stream and wetland buffer for the construction phase (Exhibit 9, page 7 and Exhibit 17). Permanent to both the stream and wetland buffer is estimated at approximately 155 sf for the overland pipe and the energy dissipater pad and manhole structure. Permanent adverse impacts to the site buffer are not anticipated as a result of the proposed project according to the Supplemental Wetland and Stream Study (Exhibit 9, page 8). The study states that there is minimal native vegetation existing where the pipeline is proposed. The Supplemental Wetland and Stream Study states that with the proposed mitigation provided through buffer enhancement and plantings (Exhibit 17), the project will result in a no -net -foss of stream and wetland buffer functions and values (Exhibit 9, page 8). Staff recommends, as a mitigation measure, that the recommendations and planting plan provided in the Supplemental Wetland and Stream Study and Buffer Restoration Plan (Exhibit 9) as part of the Vegetation subsection below are complied with. The applicant is required to receive a Critical Areas Exemption for the stormwater utility work in the geological, stream, and wetland critical areas on the subject site. At this time the applicant has applied for these required critical areas exemptions, which are anticipated to be issued following the SEPA Determination. Mitigation Measures: The project shall follow the recommendations of the Supplemental Wetland and Stream Study and Buffer Restoration Plan; prepared by Shannon & Wilson Inc, dated October 28, 2014 (Exhibit 9). ERC Report 15-000033 City of Renton Deportment of Community & E mic Development ironmental Review Committee Report MAPLEWOOD CREEK STORMWA TER OUTFALL IMPROVEMENT PROJECT LUA15-000433, ECF, CAE Report of February 23, 2015 Page 8 of 11 Nexus: SEPA Environmental Regulations, RMC 4-3-050 Critical Areas. b. Aquifer Protection Area Impacts: The trench work in Chelan Ave SE and re-routing of the existing stormwater outfalls to the new outfall will occur within the City of Renton Aquifer Protection Area Zone 2 (Exhibit 14). The overall purpose of the aquifer protection regulations is to protect aquifers used as potable water supply sources by the City from contamination by hazardous materials. Some uses are restricted that store, handle, treat, use, or produce substances that pose a hazard to groundwater quality. If fill is used for project development, a fill source statement would be required to be submitted to the City to ensure clean fill is used. Impacts to the Aquifer Protection Area are not anticipated as a result of the subject project. Mitigation Measures: N/A Nexus: N/A c. Storm Water Impacts: The overall project is to reduce the impacts of the existing stormwater facility currently discharging near the top of the hillside above Maplewood Creek. Stormwater recommendations for the permanent facilities proposed and for the construction process are provided for in three submitted reports, the Geotechnical Report (Exhibit 7), the Technical Memorandum Hydrologic/Hydraulic Analysis and Preliminary Design (Exhibit 8), and the Supplemental Steam and Wetland Study (Exhibit 9). Stormwater related recommendations from the studies are as follows: • Best management practices are required as part of construction and temporary and permanent erosion recommendations are made in the Draft Geotechnical Report (Exhibit 7, page 10). • The Environmental Checklist states that during construction, if fuel and oil spills occur, they would be mitigated or altogether avoided through the required construction contractor's implementation of a Spill Prevention, Control, and Countermeasures (SPCC) Plan (Exhibit 6, page 9). • The submitted Technical Memorandum Hydrologic/Hydraulic Analysis (Exhibit 8) provides recommendations for the energy dissipater at the toe of the slope where the new stormwater outfall would release water. The City proposes use of a manhole energy dissipater (Exhibit 4). The Hydrologic/Hydraulic Analysis states the dissipater meet the following requirements (Exhibit 8, page 12): reduce velocities prior to discharge, be maintainable without entering the structure, and be maintainable with hand tools due to access limitations. • The Geotechnica I Report identifies stormwater related recommendations that a check dam shall be installed at the upstream end of the outfall to prevent groundwater seepage along the pipe bedding material so long term erosion does not occur on the hillside and that a quarry spall pad covered with a leveling layer of crushed surfacing base course to be installed around the energy dissipater to prevent localized erosion at the outfall area (Exhibit 8, page 19). • The submitted Supplemental Stream and Wetland Study (Exhibit 9) provides recommendations for site preparation and earthwork around the Maplewood Creek and wetland critical areas_ The study (Exhibit 9, page 10) recommends that prior to commencing earth disturbance activities, high - visibility silt fencing will be installed upslope of the Maplewood Creek GHWM and delineated wetland boundary to protect the aquatic areas from being impacted by the project. Further, the study recommends that during construction, areas that will no longer be worked will be permanently stabilized using best management practices such as jute mats, native upland seed mix, and/or match (Exhibit 9, page 10). Staff has already recommended that the recommendations of the Draft Geotechnical Report (Exhibit 7) be followed as a mitigation measure. Staff will recommend that the Supplemental Wetland and Stream Study recommendations be required as part of the Water subsection which is anticipated to reduce stormwater ERC Report 15-000033 City of Renton Deportment of Community & i omic Development vironmentol Review Committee Report MAPLEWOODCREEKSTORMWATEROUTFALL lMPROVEMENTPROJECT LUA15-000033, ECF CAE Report of February 23, 2015 Page 9 of 11 impacts and erosion in both the short and long-term. Given the analysis above provided by the Technical Memorandum Hydrologic/Hydraulic Analysis and Preliminary Design (Exhibit 8), staff recommends, as a mitigation measure, that the project follow the recommendations of the analysis including the section on the energy dissipater to reduce storm water impacts to the area. Mitigation Measures: The project shall follow the recommendations of Hydrologic/Hydraulic Analysis and Preliminary Design — Technical Memorandum; Project No. 14-10291.04, prepared by BHC Consultants, dated November 24, 2014 (Exhibit 8). Nexus: SEPA Environmental Regulations, RMC 4-3-080 Critical Areas, RMC 4-6-030 Drainage Surface Water Standards. 3. Vegetation Impacts: The Supplemental Wetland and Stream Study and Buffer Restoration Plan for the project was prepared by Shannon & Wilson Inc, dated October 28, 2014 (Exhibit 9) and provides information regarding the vegetation in the critical area buffers and the proposed mitigation plantings. On the private property portion of the project, near the Maplewood Creek and Wetland A, there are steep ravine slopes and narrow upland shelves on either side. The steep slopes and minimal ground cover limit the ravine's existing vegetation's ability to filter stormwater runoff or slow surface water during rain events (Exhibit 9, page 8). Evidence of human disturbance within the upland buffers included yard clippings, illegal dumping, computer network cables tied to trees, and disturbed foot paths throughout the ravine. Upland vegetation adjacent to the identified wetland is dominated by a native forested stratum composed of Western red cedar, big leaf maple, and red alter with an understory of native and nonnative shrubs and herbaceous species including sword fern, meadow buttercup, and English ivy (Exhibit 9, page 6). The study states that minimal native herbaceous vegetation currently exists in the proposed pipeline alignment in the buffer (Exhibit 9, page 8), The study states that the low profile and narrow footprint of the overland pipe will allow for the re- establishment of herbaceous, shrub, and forested vegetation strata. The Supplemental Study states that the existing forested and shrub strata in the buffer area provide shade that helps moderate water temperature in Maplewood Creek and contributes organic matter (leaf) to the stream system (Exhibit 9, page 8). Further, the canopy mitigates the erosive force of rain and the root systems stabilize soil on the steep slopes. The project includes a buffer restoration and enhancement plan that would consist of restoring the 1,200 sf of temporary disturbed buffer by replanting the disturbed areas and removing invasive species in accordance with City of Renton restoration regulations in RMC 4-3-0501 (Exhibit 17 and Exhibit 9, page 9- 13). An additional 155 sf of buffer enhancement would occur to offset the unavoidable permanent impacts to the buffer from the presence of the overland pipe and the manhole dissipater structure within the wetland and stream buffer (page 9). The overall goals of the restoration are included in the Supplemental Study (Exhibit 9, page 10) including to enhance hydrologic and water quality function, result in no -net -loss of riparian habitat function, and offset permanent buffer impacts with overall increased buffer function. The planting plan, as outlined in the Supplemental Wetland and Stream Study and Buffer Restoration Plan (Exhibit 9, page 10-13), is to install native, non-invasive, shrub and groundcover plant species throughout the restored wetland and stream buffer. Trees are not proposed in the restoration plan as no trees within the critical area buffers are being impacted and no trees are anticipated to be impacted as part of the project. A planting sequence is recommended along with maintenance activities to ensure that the restoration is successful. The maintenance activities include watering, replacement of mortalities in the first year following plant installation, removal of noxious weeds, and potential targeted use of herbicide application if approved by the City. To allow the restoration plants to grow and establish themselves in the area of work on the hillside and near the critical areas and within the buffers, staff recommends that the Supplemental Wetland and Stream Study and Buffer Restoration Plan planting plan be followed. Staff also recommends that a subsequent memorandum from Shannon & Wilson, or qualified biologist, be provided ERC Report 15-000033 City of Renton Deportment of Community & E mie Development MAPLEWOOD CREEK STORM WATER OUTFALL IMPROVEMENT PROJECT Report of February 23, 2015 vironmentol Review Committee Report LUA15-000033, ECF, CAE Page 10 of 11 within a reasonable time period to provide an overall assessment of the planting and restoration area based on the goals of the proposal and to recommend if targeted herbicide application is recommended to be used or not. Mitigation Measures: • The project shall follow the recommendations of the Supplemental Wetland and Stream Study and Buffer Restoration Plan; prepared by Shannon & Wilson Inc, dated October 28, 2014 (Exhibit 9). • A memorandum from Shannon & Wilson, or qualified biologist, shall be provided following Maintenance Activity #2, which is to replace all plant mortalities during the fall or winter of the first year following plant installation, where the memorandum is to provide an overall assessment of the planting and restoration area based on the goals of the buffer restoration and enhancement proposal. The memorandum shall also recommend if targeted herbicide application is recommended to be used. Nexus: SEPA Environmental Regulations, RMC 4-3-080 Critical Areas 4. Wildlife Impacts: A Supplemental Wetland and Stream Study and Buffer Restoration Plan for the project was prepared by Shannon & Wilson Inc, dated October 28, 2014 (Exhibit 9) and provides information regarding the existing wildlife in the project area. The consultant report states that minimal signs of wildlife were observed during the site visit although it is assumed that the area provides some shelter, forage, and refuge to passerine bird species and mammals common to urban environments and riparian areas (Exhibit 9, page 8). Staff made a site visit in January 2015 and noticed deer excrement on the hillside south of the creek. In regards to fish species, the Supplemental Study provides discussion of priority habitats and species within the Maplewood Creek and why the creek classification should be upgraded (Exhibit 9, page 3). Additionally, the Environmental Checklist (Exhibit 6, page 8) identifies Coast Resident Cutthroat. The study states that Maplewood Creek joins the Cedar River approximately 1 river mile downstream of the site. The study finds that there are no fish passage barriers, that there is occurrence and migration of coast cutthroat trout which is a WDFW priority species, past presence of trout fry 1,100 feet downstream, and modeled presence of fall Chinook, winter steelhead, sockeye, and documented coho salmon over half a mile downstream (Exhibit 9, page 3). The study further states that approximately 150 feet south of the site, the WDFW Priority Habitat and Species map identifies a Biodiversity Area and Corridor priority habitat along the Maplewood Creek and Cedar River riparian areas (Exhibit 9, page 3). Based on the provided habitat information, staff is recommending that the Title 4 update of the municipal code include an update of this stretch of Maplewood Creek, to upgrade its classification rating given the findings from this report. Mitigation Measures: No further mitigation required. Nexus: Not applicable. 5. Transportation Impacts: It is anticipated that temporary impacts to traffic would result from the proposed project during construction. The project would result in the closure of part of Chelan Ave SE as the new stormwater pipeline is located in Chelan Ave SE from the intersection with SE 4t" PI to the new outfall location at SE 2nd PI, during construction. A traffic control plan would be required during constriction to ensure access to all homes located on the street is maintained throughout construction. Mitigation Measures: No further mitigation required. Nexus: Not applicable. 6. Utilities ERC Report 15-000033 City of Renton Department of Community & E mic Development vironmental Review Committee Report MAPLEWOOD CREEK STORMWA TER OUTFALL IMPROVEMENT PROJECT LUA15-000033, ECF, CAE Report of February 23, 2015 Page 11 of 11 Impacts: The two stormwater outfalls closest to SE 4th PI have resulted in erosion of the hillside and west bank of the stream and would be capped and abandoned. Stormwater flow would be redirected north within the public right-of-way through 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and SE 2nd Place, then directed in 32 feet in new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 16 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. Mitigation Measures: No further mitigation required. Nexus: Not applicable. D. Comments of Reviewing Departments The proposal has been circulated to City Department and Division Reviewers. Where applicable, their comments have been incorporated into the text of this report and/or "Advisory Notes to Applicant" (Exhibit 15). ✓ Copies of all Review Comments are contained in the Official File and may be attached to this report. The Environmental Determination decision will become final if the decision is not appealed within the 14 -day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Environmental Determination Appeal Process: Appeals of the environmental determination must be filed in writing together with the required fee to: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057, on or before 5:00 p.m. on March 13, 2015. RMC 4-8-110 governs appeals to the Hearing Examiner and additional information regarding the appeal process may be obtained from the City Clerk's Office, Renton City Hall — 7th Floor, (425) 430-6510. 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Finance 1&�IT�Division Legend City and County Boundary Other �.� City of Rentor Addresses Parcels 1st Floor 1 st Floor 2nd Floor t]«71Vi ■ ap :rerr�es a use, generated static output from an !nternet mapp I9 s, -,e and 4eaniy Cala sayers that appear ori tNs map may cr may nct he accurate current oroth?rwise reliable THIS MAP IS NOT TO 6E USED FOR NAVIGATION `-'A ld CFmf 35 Ii !C i f l� II J.„yy�H 3 t o r a Z Wg U� o j a . ZY NY4G5 --- Unolksl u'9vc 31 —'QTS SI LYBBC 3131 q it g I �C U L ? p 7i a1 - O i I I W Ia f i ' --iS Hi4 aS wd a I f I Iw w --- iI = C 4 l�IrI I O `-'A ld CFmf 35 Ii !C i f l� II J.„yy�H sy NWOS 7i—m7N-1 OY'L9[31 3 t o0 Z Wg U� o j sash sy NWOS 7i—m7N-1 OY'L9[31 — U1 - [ 8 Ag EXHIBIT 4 lr .) 3N _�E L5'LY!' 31 1NT5.91},n 31 Feu r.n m�,l iea��yw�wre�ai� m •' 3 o0 Z Wg U� o j . 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CcU Q • a�Qa 3$ id.eual3 o E v = 3�f0 w cc o `4 tL i?� yl au �� �• - ' C m C S s 7 Z e�oodCr+ek O+ate - ��a1f,W 41 m 3 's i 4 �, m n ,• .00 _mdlL —NORTH '_ - s i•� • .—+ a Stir a , �e79g .. Es$8 E o AV U045;RA 9 35 any ualunna 4 ■� its 9 3 € » oldeyy P63V Wed awcH allgOVy alePAuu i m , ll ll •ww ._e..w _m 5 _ r Jaw xr .w• ry.+m . SEPA ENVIRONMENTAL CHECKLIST UPDATED 2014 Purpose of checklist: Governmental agencies use this checklist to help determine whether the environrr, ��a ,our proposal are significant. This information is also helpful to determine if available .,zation or compensatory mitigation measures will address the probable significant imr �O JQ� )nmental impact statement will be prepared to further analyze the proposal.; I� Instructions for applicants:h[ _e{] This environmental checklist asks you to describe some basic informatlL- proposal. Please answer each question accurately and carefully, to the best of your knowlea" nay need to consult with an agency specialist or private consultant for some questions. You may u-- .lot applicable" or "does not armly" only when you can explain why it does not apply and not when the answer is unknown. You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision- making process_ The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this'. checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for Lead Agencies: Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of checklist for nonproject proposals:hf g For nonproject proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (partes Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non -projects) questions in Part B - Environmental Elements —that do not contribute meaningfully to the analysis of the proposal. A. background hep 1. Name of proposed project, if applicable:hj elp1 Maplewood Creek Stormwater Outfall Improvements PrniPct EXHIBIT 6 SEPA Environmental checklist (WAC 197-11-960) -UYUu i /u 14 RECEIVED JAN 2 0 2015 CITY OF RENTON PLANNING DIVISION Page 1 of 17 DRAFT GEOTECHNICAL ENGINEERING '6:1 Maplewood Creek Stormwater Improvements Renton, Washington Prepared for: BHC Consultants and City of Renton Wastewater Utility Engineering Project No. 140042 • July 3, 2014 DRAFT Aspect CON -5, EXHIBIT 7 RECEIVED JAN 2 Q 2015 CITY OF RENTON PLANNING DIVISION Aft NS_ DiL T QTS TECHNICAL MEMORANDUM Date: 1 /24/2014 y - To: Allen Quynn, P.E. City of Renton From: CC: Subject: Peter Cunningham, P.E./Jeff Kreshel, P.E. BHC Consultants Ron Straka, P.E City of Renton Hydrologic/Hydraulic Analysis and Preliminary`(30%) Design City of Renton: Maplewood Creek Stormwater Outfall Improvements Project No: 14-10291.04 1. Introduction This memorandum summarizes the hydrologic/hydraulic analysis that was performed to determine conveyance system sizing and requirements for the Maplewood Creek Stormwater Outfall Improvements project. A project area/location map is shown in Figure 1. The purpose of this project is to abandon two stormwater outfalls that are failing and have significant erosion and sedimentation problems and replace them with a new storm drain and outfall. The new storm drain will be located in Chelan Avenue SE between SE 2rd Place and SE 4th Place. The new outfall to Maplewood Creek will be northeast of the intersection of Chelan Avenue SE and SE 2 d Place. The following specific efforts were performed as part of this analysis: • Delineate tributary basin and sub -basins • Identify build -out sub -basin characteristics • Develop a hydrologic/hydraulic model of the proposed storm drain and outfall alternatives • Identify/define pipe sizes for new storm drain and outfall piping • Size energy dissipator for new outfall • Prepare preliminary (30%) design drawings. 2. Applicable Design Standards/Criteria and Proposed Outfall Features Standards Based on discussions with and direction from City staff, the stormwater system analysis at a minimum must comply with the following local and state standards. RECOVER TECHNICAL MEMORANDUM EXHIBIT S BHC Consultants, L[.D}� Hydrologic/Hydraulic Analysis a �p Q City of Renton Maplewood Creek Stormwater C f RENiON November 24, 2014 ���� Pl_APiNiNG D4VlS�UN' Supple -1 al Wetland and Stream Study and Buffer Restoration Plan Maplewood Creek Stormwater Outfall Improvements Project Renton, Washington October 28, 2014 baa Excellence. Innovation. Service. Value. Since 1.954. SAN 2 0 Z15 GITy OF RENTC)N pU\NNNG C)NISION Submitted To: Mr. Jeffrey S. Kreshel, P.E. BHC Consultants 1601 Fifth Avenue, Suite 500 Seattle, Washington 98101 By: Shannon & Wilson, Inc. 400 N 34th Street, Suite 100 Seattle, Washington 98103 21-1-12459-001 EXHIBIT 9 Slopes Notes None CAI �128 D 64 128 Feet WG S_ 1984_ Web_Mercator_Auxi€ iary_Sphere Legend City and County Boundary Other _. City of Renton I..; Addresses Parcels 1 st Floor 1 st Floor City ofIni Re on - Re .. Finance & IT Division 2/ EXHIBIT 10 . X25%&-40%(Sensitive) ■ X40% & <=90% (Protected) ■ a90% (Protected) Environment Designations El Natural E Shoreline High Intensity ❑ Shoreline Isolated High Intensity '—` Shcrelire Residertal Urban Conservancy Iricrlirtinnc a user generated static outPJI from an imerret mapFing site anc cniy Data layers that appear on this map nay or may nol be accurate current_ or ethermse ,=1iab e THIS MAP IS NOT TO BE USED FOR NAVIGATION Erosion 4506, 4512 ' '228 278 2,19 256 4507 4501 73605 264 4520 73613 4512 340 4506 73627 30fi 4521 305 451.5 312 13fi27 4509 - 1 378 371 4524 402 4518 4512 408 4506 413 414 4525 4519 4513 420 4501 4507 427 4606 426 4600 4524 4518 Notes Legend None City and County Boundary Natural Other ® Shoreline High Intensity Cdy of Renton ❑ shoi leclated Nigh Intensity Addresses ShorelineResderdial Parcels ❑ urban Conservancy 1st Floor Jurisdictions 1 st Floor 128 0 64 128 Feet 2n WGS_148A_Web _Mercator _Auxiliary _Sphere 15 n1 EXHIBIT 11 liifgrrhd generatec static output frara an Internet mapping site and Clty Of O '; y Da, layers that appear or. this map may or may wbe Rerl accurate cur -eat orotherwisere'9anie Finance & IT Division 2118121 S MAP IS NOT TO BE USED FOR NAVIGATION Landslide Notes None 0 128 a 64 128 Feet WGS_1984_ Web_ Mercator_Auxil lary_Sphere City of I - yi� I irfto-n1--.1 Finance & IT Division Legend City and County Boundary Other City of Renton Addresses Parcels 1st Floor 1st Floor CVIJT111150TT 4 "9 Vel IiLJi a Ji ■ HIGH MODERATE UNCLASSIFED Environment Designations Natural Shoreline High Intensity Shoreline Isolated High Intensity Shoreline Residential Urban Conservancy .hlriw irtitil ap is a ::ser generated slag-- cutpul from air !rternet mappw.q s�:e and :'areT!ce only Data'.ayers that appear on ihvs map may or may not be accuraie currant, or al rel:able THIS MAP IS NOT TO BE USED FOR NAVIGATION Streams Notes rden None City and County Boundary Other X 0 128 266 Poet 1984_Web_Mercato r_Auxil iary_Sphere l .. City of Renion Addresses Parcels 1st Floor 1st Floor ' L-- EXHIBIT 13 City ofI°f :1 ��' Re Finance & IT Division 2/ a user genarstgC sFat�r output from an 3nternet macpiny site aid ,ce only Data layers that appear an this map may or may nib ce accurate current -rol e�ise-eiocie THIS MAP IS NOT TO BE USED FOR NAVIGATION Notes None ;A7 t f.quifer Protection Area 4500 SE 2nd St 4505 4519 4607 205 ��1. W 4515 4506 0 128 256 Feet _1984_Wet1_Mercator _Auxiliary—Sphere City of n Finance & IT Division 225 ar 4721 4807 4902 ' Zone 2 210 Capture Zone Q One Year Capture Zone ■ ity 204 200 202 208 4903 201 0 216 206 214 4909 4921 210 207 222 212 213 220 228 218 219 226 4900 4916 SE 2nd Pt �!' r •.......... 13605 13920 10 z 4921 13613 (.A 13921 CUj C � €ef 13621 �, ) ® 13905 131M 13 62 7 1y 0312 4905` 37 .u'- 13703 13706 13709 1371 13715 13714 1 I1 13721 — 355 x w 13720 \Ysl il!■rsl�f!•11�1 13801 6 13802 c 138070 14034 N 13808 in 13813 14020 Fla 13814 1' 13 819 13906 X, ` I 1� 13825 $ 13901 13909 Legend City and County Boundary Other ! City of Renton t.. Addresses Parcels 1st Floor 1st Flonr 2nd 1st f ntnF EXHIBIT 14 Informatior RentonMap', 2/19/2015 . Zone i Modified . Zone 2 Wellfield Capture Zone One Year Capture Zone ■ Five Year Capture Zone ■ Ten Year Capture Zone erased static output from an Intemer crapping site and a,a layers that appear on 1h�5 rnap may cr may nct be accurate Cur rerd cr otherwise re�iaete THIS MAP IS NOT TO BE USED FOR NAVIGATION PLAN REVIEW COMMENTS "A"15-000033 Application Date: January 22, 2015 Site Address: 4515 SE 2nd St Name: Maplewood Creek Stormwater Outfall Improvements Renton, WA 98059-4990 Pro}ect Plan - Planning Review Version 1 1 February 19, 2015 Planning Review Comments Kris Sorensen 1425-430-6593 1 ksorensen(9rentonwa.gov Recommendations: Planning: 1. RMC section 4 4 030.0.2 limits haul hours between 8:30 am to 3:30 pm, Monday through Friday unless otherwise approved by the Development Services Division. 2. Commercial, multi family, new single family and other nonresidential construction activities shall be restricted to the hours between seven o'clock (7:00) a.m. and eight o'clock (8:00) p.m., Monday through Friday. Work on Saturdays shall be restricted to the hours between nine o'clock (9:00) a.m. and eight o'clock (5:00) p.m. No work shall be permitted on Sundays. 3. Within thirty (30) days of completion of grading work, the applicant shall hydroseed or plant an appropriate ground cover over any portion of the site that is graded or cleared of vegetation and where no further construction work will occur within ninety (90) days. Alternative measures such as mulch, sodding, or plastic covering as specified in the current !Ging County Surface Water Management Design Manual as adopted by the City of Renton may be proposed between the dates of November 1 st and March 31 st of each year. The Development Services Division's approval of this work is required prior to final inspection and approval of the permit. 4. The applicant may not fill, excavate, stack or store any equipment, dispose of any materials, supplies or fluids, operate any equipment, install impervious surfaces, or compact the earth in any way within the area defined by the drip line of any tree to be retained. 5. If machinery is used near existing trees on the 4515 SE 2nd St parcel, the applicant shall erect and maintain six foot (61) high chain link temporary construction fencing around the drip lines of all retained trees, or along the perimeter of a stand of retained trees. Placards shall be placed on fencing every fifty feet (50') indicating the words, "NO TRESPASSING — Protected Trees" or on each side of the fencing if less than fifty feet (50'). Site access to individually protected trees or groups of trees shall be fenced and signed. Individual trees shall be fenced on four (4) sides. In addition, the applicant shall provide supervision whenever equipment or trucks are moving near trees. Technical Services Comments Bob MacOnie 1425-430-7369 i bmaconie@rentonwa. Recommendations: Bob Mac Onie 1/23/2015 There is no mention of any re mediation of the areas damaged by the existing outfalls. Is it wise to leave the failed infrastructure in place and just cap the pipes. What is the issue with removal of the exposed down sloe pipes and remediation of the disturbed surface? EXHIBIT 15 Ran: February 19, 2015 Page 1 of 1 E L7 v LEGEND N Q� Data Pit W - ' L • • • • • • Stream Buffer Ordinary High Water Mark (OHWM) 5 • • • • • • Wetland Buffer Wetland Boundary EXHIBIT 16 Note: Buffers may he increased near steep slope Maplewood Creek Stormwater Outfall Improvements Project Renton, Washington WETLAND AND STREAM DELINEATION 21 -1 -12459 -Oa 1 N FEW I -SOK INC. FSG. 5 rNYinoNUF l - a - z k $ � 2° - - � • <\\\ ®^ z � �•a«2<' %: � ;/i� --- / Z , / (! / - - - -- \\ EXHIBIT 17 ()\/ � [> / 0 !05 � 2 §S \ J j[I \§ g : z ; }■ \ \ \ \ \ \ � � A Ei \ M : \\�\gi n \\\�\ \ \\ \ } z )){ƒf\\\ \ EXHIBIT 17 ()\/ � [> / 0 !05 � 2 §S \ J j[I \§ g : z ; / / 7 u) } 3 7 A Ei \ M : \\�\gi n EXHIBIT 17 k� ()\/ / 0 !05 � 2 §S \ j[I \§ g § § \ s; u) } 3 7 A Ei \ M \\�\gi k� ()\/ \\a\ £)ƒa- u) \ \\�\gi n \\\�\ \ \\ § )){ƒf\\\ \ k� Maplewocd Creek City of Renton Maplewood Creek Outfall improvements Preliminary Engineer's Opinion of Probable Construction Cost Prepared by: P. Cunningham Reviewed by: R. Dorn 812212014 S:kProjectskRenton%14-10291.04 Maplewood Creek Stormwater Outfall Improv(s)1Cost Estimatesl[Maplewood NoV Bid Item Description Unit Bid Price Quantity Unit Total 1 Mobilization $28,900 1 Is $28,900 2 Temporary Erosion & Sediment Control $11,500. 1 Is $11,500 3 Traffic Control $5,80.0 1 Is $5,800 4 General Restoration $5,800 1 Is $5,800 5 Trench Safety Systems $5 750 If $3,800 6 12 -inch Storm Drain Pipe, Buried $75 200 If $15,000 7 15 -inch Storm Drain Pipe, Buried $87 290 if $25,200 8 18 -inch Storm Drain Pipe, Buried $99 215 If $21,300 9 24 -inch Storm Drain Pipe, Buried $184 45 If $13,300 10 12 -inch Storm Drain Pipe, Above Ground $52 60 If $3,100 11 48" Dia. Catch Basin Type 2 $7,000 4 ea $28,400 12 Slope Anchors $15,000 1 Is $15,000 13 Energy Dissipator $30,000 1 is $30,000 14 Connection to Ex. Storm Drain incl. Bypass $5,000 4 ea $20,000 15 Abandon, Fill, and Cap Ex. Outfalls $3,000 2 ea $4,000 16 Slope and Stream Restoration $20,000 1 is $20,000 17 Foundation Gravel $20 206 tons $4,100 18 Backfill Gravel $15 2,100 tons $31,500 19 Crushed Surfacing Top Course $20 110 tons $2,200 20 Sawcutting HMA $2 1,500 If $3,000 21 HMA $115 280 tons $32,200 22 Dewatering $20,000 1 Is $20,000 Subtotal $340,700 Sates Tax 9.5% $32,367 Contingency 30% $111,920 TOTAL ESTIMATED CONSTRUCTION COST $490,000 Notes/Assumptions 1. Import backfill assumed to be 50% 2. Foundation Gravel assumed to be 50% 3. 6" HMA and 6" CSTC over trench, 2" HMA over 10.5 lane per Renton Std Detail H032 4. Gen. Rest., Traffic Control, Erosion Control at 2% Construction Costs 5. Mobilization is assumed to be 10% of Construction 6. Buried pipe includes all fittings, pipe, bedding, excavation, haul, and temporary trench patch 7. 30% contingency for unknowns (additional piping needed, larger pipe sizes, restoration, etc) The opinion of probable cost herein is based on our perception of current conditions at the project locatiori. This opinion reflects our professional opinion of accurate costs at this time and is subject to change as the project design matures. BHC Consultants has no control over variances in the cost of labor, materials, equipment; nor services provided by others, contractor's means and methods of executing the work or of determining prices, competitive bidding or market conditions, practices or bidding strategies. BHC Consultants cannot and does not warrant or guarantee that proposals, bids, or actual construction costs will not vary from the costs presented as shown. EXHIBIT 18 DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT ENVIRONMENTAL REVIEW COMMITTEE REPORT ERC MEETING DATE: Project Name: Project Number: Project Manager: Owners of private property and public right- of-way: Applicant/Contact Project Location: February 23, 2015 Maplewood Creek Stormwater Outfall Imp LUA15-000033, ECF, CAE Kris Sorensen, Associate Planner e ';'"'-'City of 5 AlQR t �pJP D T�' �D • �4 T PID 281630-0100: Collin & Christina Fowler; 4515 SE 2nd St; Renton WA 98059**,-< Ri ht-of-Wa L. City of Renton City of Renton Stormwater Utility; Attn: Allen Quynn; 1055 S Grady Way, 5th Floor; Renton WA 98057 The private property at 4515 SW 2nd St and the Stormwater facilities along the public right-of-way of Chelan Ave SE between SE 4th PI and SE 2nd Pl. Project Summary: The City of Renton is requesting Environmental (SETA) Review and a Critical Areas Exemption to re-route two stormwater outfalls that currently discharge at the top of a hillside slope to be routed in the right-of-way subsurface to the intersection of Chelan Ave SE and SE 2nd Place where a new outfall will be constructed in the southwest corner of private property 4515 SE 2nd St (PID 2816300100). Stormwater would be piped from the outfall to the bottom of the hillside, just west of the Maplewood Creek Class 3 stream and nearby Category 3 wetland. Approximate areas of work are 3,200 sf of public right-of-way and 1,300 sf of private property, all within the Residential -8 zone designation. The outfalls near SE 4th PI have resulted in erosion of the hillside and bank of the stream and would be capped and abandoned. Stormwater flow would be re- routed to the north within the Chelan street right-of-way through approximately 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and SE 2nd Place, then directed 32 feet in length of new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 16 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. No trees would be impacted. Critical areas include the stream, wetland, aquifer protection area, regulated slopes, and erosion hazards. The project would result in temporary impacts of 1,200 sf of critical areas buffers for site access and construction. The new overland pipe, outfall, and energy dissipater pad will result in 155 sf of permanent buffer impact. Approximately 1,355 sf of buffer restoration and enhancement are proposed. Studies provided are a geotechnical report, hydrologic/hydraulic analysis, and supplemental wetland and stream study and buffer restoration plan. Exist. Bldg. Area SF: N/A Proposed New Bldg. Area (footprint): NIA Proposed New Bldg. Area (gross): N/A Site Area: 42,000 sf Total Building Area GSF: NIA STAFF Staff Recommends that the Environmental Review Committee issue a Determination RECOMMENDATION: of Non -Significance - Mitigated (DNS -M). ERC Report 15-000033 City nton Deportment of Community&Econom velopment ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT:� ;M M U'l °1 COMMENTS DUE: FEBRUARY 6, 2015 APPLICATION NO: LUA15-000033, ECF DATE CIRCULATED: JANUARY 23, 2015 APPLICANT: Allen Quynn, City of Renton PROJECT MANAGER: Kris Sorensen PROJECT TITLE: Maplewood Creek Stormwater Outfall Improvements PROJECT REVIEWER: SITE AREA: 43,084 square feet EXISTING BLDG AREA (gross): LOCATION: 4515 SE 2nd St PROPOSED BLDG AREA (gross) SUMMARY OF PROPOSAL: The applicant, the City of Renton, is requesting Environmental (SEPA) Review and a Critical Areas Exemption to re-route two stormwater outfalls that discharge at the top of a hillside slope to a catch basin at the intersection of Chelan Ave SE and SE 2nd Place and a new outfall in the southwest corner of 4515 SW 2nd St (PID 2816300100) at the bottom of the hillside west of the Maplewood Creek Class 3 stream and associated Category 3 wetland. Approximate areas of work are 3,200 sf of public right-of-way and 1,300 sf of private property within the Residential -8 zone designation. The two outfalls closest to SE 4th PI have resulted in erosion of the hillside and west bank of the stream and would be capped and abandoned. Stormwater flow would be redirected north within the public right-of-way through 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and 5E 2nd Place, then directed in 32 feet in new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 16 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. No trees would be impacted. Critical areas include the stream, wetland, aquifer protection area, regulated slopes, and erosion hazards. The project would result in temporary impacts of 1,200 sf of critical areas buffers for site access and construction. The new overland pipe, outfall, and energy dissipater pad will result in 155 sf of permanent buffer impact. Approximately 1,355 sf of buffer restoration and enhancement are proposed. Studies provided are a geotechnical report, hydrologic/hydraulic analysis, and supplemental wetland and stream study and buffer restoration plan. A. ENVIRONMENTAL IMPACT (e.g. Non -Cade) COMMENTS Element of the Environment Probable Probable Minor Major Impacts Impacts More Information Necessary Earth Air Water Plants Land/Shoreline Use Animais Environmental Health Energy/ Natural Resources Element of the Probable Probable More Environment Minor Major Information Impacts Imparts Necessary Housing Aesthetics Light/Glare Recreation Utilities Transportation Public Services Historic/Cultural Preservation Airport Environment 10,000Feet 14,000 Feet Mik 56 yNW C/77 �� A�cuk�x� t TS P-TfV� W W &WOkO 141�A lk",,) 11lDrUd �{u J S"r W t ii AW)f Col n F1514 C -I iANAA91- ► &>Ecct4Mif D N SfD "04 CDNMI - *'PRq 6r -T ; o SF CDMV.670 11V U'l -5:aW iWa 71K - B. POLICY -RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional informati s needed to properly assess this proposal. Signature of Director or Autho ized Representative Date G CODE -RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is need properly assess this proposal. Z:2232�/ Signature &6irectororAuthor¢edRepresentative Date If you would like to be made a party of record to receive further information on this proposed project, complete this µg form and return to: City of Renton, CED — Plannin8 Division, 1055 So. Grady Way, Renton, WA 48057. r ED Name/File No.: Maplewood Creek Stormwater Outfall Improvements/LUA15-000033, ECF, CAE IANAME: H}y V0iJG MAILING ADDRESS: City/State/Zip: !?6P& G , EI_EPHONE NO.: rZ _`D ' .�. r L i G CITY OF RENT0 PLANNINGDIVISION Location when appliollan mey he ,leiVwAd: CelMrvnen! of co".'" M Ecenemic Oevelppmenl ICEOI - PNnninA Oivisipn, 5ialh Fla°r R- City Xall, L055 Septh Grady ii Renton, WA 99057 CONSISTENCY OVE9MEW: eaning/W,d life. ire. suhlect sdes Jesgraled Resitlential Single Family lRSF}pn tnr Lily pl Aenton [enprehensive Wnd Use Mao and AesidenslaRA (R -R) pn the Eiry's Zon,ng Map. Ena=ranmenlal 0avmenrs shat foal uateth. prapoxd Pro)eck E­nonmenal l5EPP]1hei HydrulpgelhydraViir nna,ysls,and 5upplemen[al Wel'Hnd Ped dream StIdy mtd 6ufler Hcslurall°n Fill Geuelepmem Rquledone Used Fpr Pr ple[l Millpllan: rhe ..elect will be subi l by the Ciys 5110. crtllnance. Ren[un Munhlpel [ptle b3450 CMlul Arae Regulallen[ and other applll codes and regulatipnr as ape.°pdare. P,ap°sad MlNeaelpn Measures `le lallpwrng M,igx M ensures will l ikely be imposed en the Proposed projeR, these -.commended Mltlganen Measures address Prolecr rmpams not covered hY wish, [odes and relugnvns as used .cove. • Foil,, se m,nenJati 5 of the geolerhniui repuq, ono aem°Pe Invasive punts and add native plantings in areas of work -Ml, ri,fil ee st ream and wetland a rens. Comment/ pn Ne shay¢appl'r[albn marthei.b.1,," In,ehdng 1, Kda Sorensen, a olan Planner. CEG - Plannhy ulWflp^,1055 SCVIJ, Grady Way. Rmlpn. WP 50.059, by 5 00 PM pn Febunty 6, IM, IFycu have questions ati l this Anyone I -sh to be mase a Party pY record and recehae Allnerl9caden by maii wn:art the Pmien ulanaFer. wh, suhmils written comm¢nU'w ill eu[nmaure Uy became .parry of record and will be —died od any dec,sion en tris project. A way pl the su i,,Oent;hr¢yhold determlhoi is available a pop CONTACT PERSON: Kris Sorensen, Associate Planner; Tek (425) 43D-6543; Erni: Rs orense n @ re ntonwa, goy PLEASE INCLUDE THE PROJECT NIIMI&ER WHEN CALLING FOR PROPER FILE IDENTIFICATION city NOTICE OF NOTICE OF APPLICATION AND PROPOSED DETERMINATION NON -SIGNIFICANCE -MITIGATED (D"5 -Ml VluJpn has bean flied and a,tepletl with Ina 9ePartment el CpmmpniSY i Ecpnemlc OraelpPmen[ ire EllT el RanSnn. the YelVswine 6nelly da¢dhesthe aPPliudpn wntl she necessary A Maslar 0.91 iCEG}-Planning OmNlpn oil pAT1E 11 ii,,,,a OF pyPLCPTION IanvarY'ii, 1pi5 1LA15 .G003i, kCE, CaE i ,,o 115E NtJhil tlC,eet Slormwaler pu[faP lmPr°uementf Ae.;ew NaWewce EmPpnnrental ISFPAI PROIiR NAME: The 11Piicanl, the Ciel of Ren:pn, is rg al the�oV °Y'a hiAyid t �IppS Vs e c ac5t pulfalVS lhal discher ssareela Nin AROIER DESCRIPTION: to re.r°u a two swr^water Py ovtYaU ,n the s°utli,•es t tl Caxgory d l ,d Plate and x n andaCrRical areas laempLen d5E2 ¢Creek Cass3s:ream end asspEa thin ire I the MaP:¢wPn d 1,So0 sl cl Priva f t °hi,,,de and west dasm a: the inl�Ieall'he bettolm el Ne h.Us,d SS's! pubVis riAM F' h . a. tPIV]g1L300 rte areas of work are 3. hPlhave rlsuitedm aeCmd north wRhlnthe CuhlK weVana, ppprenim :he Mn ousfails closest to 9k swat¢ Ilvw would be re SE and SE gra be caPPed antl abandoned- i le d,e catch harm at [heian aye the tcP at bill�ual8 zone de1dw aid peMwmc nprrheaFla� ileal bans pith¢ ssream anf001ee1 pF rew;i-sal&inch diameter SubsuA`cPo'ere proeiya ri6ht-wf way Snrough n ]1 reel .n new i4-indr Wam „ca, aPTPeernand tlaYVIA"sedand mended a"P d. znl-al area. Intl Pace, Inen J,rec[ed aril reduced to lG..nc k slru[tuie. Np bees wapld ba ,mP'a Id respl: m he Pipe wo hildi dissiwter manno deres,po hoist ds-Ihe Pr°Lett w°u eV:fal1. the I:IN'idl, where [ anew �' 1 d stepcs, an - verland avwn rhe'I NVend, a4A.IFrmecibn area, :¢guise mately 1355 sl of bvfler reslomta� dude Ina dream, w fel critiui areas n�Ners IM sire accass and cpnytr 1-' Tlie new over'a° Ihl is. f 1,10os f el pennanea. buXer impact. Apprpal h}drnlcgirfhYeraulic empemtt impact o dw,ll resul[,n 1555 led are a wit Ehnical repo° ' energy drsslpattr Cs _ SNtli¢s Prov _ and enhan¢emint dre Prao°sed dbuXer rest°shun Pian helween SE d"Pl and SEl-'Pi supplemintal wer'and and sbeam stubi an a op CdeVaP Are Sk 4515 5E 2rtl 6t ane ftiRht-ef-w -f-­ iii she lead Tye M1CY. Na Cily pE Renton has PRO1ER 1plATON: Shp ONS-Mrt d prpleca. Thmelere, as 9ETFtsMINATol OF NON-5V6NIFTr?r10E'rsY`nCrA ll,ly Ito resoptional OilY-M rpcdss t0 glue notice :hrtle OPTIOIIPL ed PNS -M dre integfited into a sirA jeterm,netl ;hat ugniACW'P3. 21[.110. lice [Jty of Allton Is usns8d the PrmPVS hold Veterminalipn el Non- ned order the �pmrneat'¢roods for Ute Prelnt the ,ssua,F qi the rhes ONS -M ,s nkely le ce issvetl. menl Period fellawing tY le cbmmenl on Use Pnyironmental impacu o` the mminl Penne. mere wit, M rip mm ly oPWnuni 51gniIV[anu-M.ligalad lVNS-M1 h .Il loo. rheeirawnu of ".ONSN P„ppotal. Ala-tlay aVPea Per' 1"15 lanwry 10,' w PERMIT PPPLI[ATtON nATE. Ianua,V 13. 3015 WaY fRenspn.WA 9gp57) rVi]TtCE OE COMPLETE PPPL1C411ON' Ilwapn 110555 GredY pi,"IDW Al Mn Qlvh lnty° amanwa 4o+ APPUFJrNTiPROJFR COFVTYSR gss;56P1V11asryVnn Br IMees E•em Peen Ertvrtpnr'u^sy' 45FPA1 RNueW errd [rislu pKmXslRrylrw Rerlaend: elven Permu 9udding Permit Cprwuv O[Mr Permit/ rahkh may be regvirad: w. NYdra nk'hy Aedlpn[IpVn plaaM1l,um 4 Gea1lchnlul RaPn gaffer Reg i� 515a1ea: Watiantl Study.4idul lo -o shn P,is,.d 1>^°lett, pmpiete cn,s d t° ,ecmve fumhel ^G adY'AaYOR. nton, WA 98057. Il Vou wpu,tlii[e to be m'1 Renton CEOf .Planning VWlsion, i0545o 3. tiff. CAE larm and rexurn m'. CiY° k5lormwaler outfall Vhi,,_ mentsi Ldpl9 UtlWd NamelFiie no.. N.aPlewood tree h, ME f�J`pYlSurelZipi 1J MALMG 0.COPF55' � IFLEPHONF NO -i _� CERTIFICATION S LVeAiihereby certify that copies of the above document were posted in conspicuous places or nearby the described property on -3 Date: Signed: STATE OF WASHINGTON j ) SS COUNTY OF KING ) I certify that I know or have satisfacto signed this instrument and acknowle uses and purposes mentioned in the in Dated: — p, Ra Mpy1r, ,yA��t�\!x ya) I f gKk s-I'ON e -,to file ! Y C.)fe 01AR�. evidence that - A it to b hips/herrltheir free and voluntary act for the trument. ``- z___ Nota. Pufic in and for the State of Washington I' i r ,. 4 any (Print): edit expires: f 4t=ii� CITYFRENT.0 DEPARTMENT OF C4MMUTY&-ECQNO -f DEVELOPMENT PLANNING DIVISION AFFIDAVIT OF -S RVICE Y` A 1. 0 NG On the 23rd day of January, 2015, 1 deposited in the mails of the United States, a sealed envelope containing Notice of Application and Acceptance documents. This information was sent to: Agencies See Attached Collin and Christina Fowler Owners Allen Quynn, City of Renton Applicant 300' Surrounding Property Owners See Attached (Signature of Sender): STATE OF WASHINGTON ) SS COUNTY OF KING ) ```���\\11111t1iti I certify that I know or have satisfactory evidence that Sabrina Mirante _�`-��,iA signed this instrument and acknowledged it tp be his/her/their free and voluntary act`fiorpses mentioned in the instrument. ` 0 11 -PTA + m% Dated: 1 ! pLs L\1 otary Public in and for the ,_ �r;ii�►NASN. �t�4� c�= Notary (Print) �� �� Vie, �ti My appointment expires: °., ESFikFY Maplewood Creek Stormwater Outfall Improvements MOM -.. LUA15-000033, ECF, CAE template - affidavit of service by mailing AGENCY (DOE) LETTER MAILING (ERC DETERMINATIONS) Dept. of Ecology ** WDFW - Larry Fisher* Muckleshoot Indian Tribe Fisheries Dept. Environmental Review Section 1775 12th Ave. NW Suite 201 Attn: Karen Walter or SEPA Reviewer PO Box 47703 Issaquah, WA 98027 39015 — 172nd Avenue SE Olympia, WA 98504-7703 Auburn, WA 98092 WSDOT Northwest Region * Duwamish Tribal Office * Muckleshoot Cultural Resources Program Atm: Ramin Pazooki 4717 W Marginal Way SW Attn: Ms Melissa Calvert King Area Dev. Serv., MS -240 Seattle, WA 98106-1514 39015 172"d Avenue 5E PO Box 330310 Auburn, WA 98092-9763 Seattle, WA 98133-9710 US Army Corp. of Engineers * KC Wastewater Treatment Division * Office of Archaeology & Historic Preservation* Seattle District Office Environmental Planning Supervisor Attn: Gretchen Kaehler Attn: SEPA Reviewer Ms. Shirley Marroquin PO Box 48343 PO Box C-3755 201 S. Jackson ST, MS KSC-NR-050 Olympia, WA 98504-8343 Seattle, WA 98124 Seattle, WA 98104-3855 Boyd Powers *** Depart. of Natural Resources PO Box 47015 Olympia, WA 98504-7015 KC Dev. & Environmental Serv. City of Newcastle City of Kent Attn: SEPA Section Attn: Tim McHarg Attn: Jack Pace 35030 SE Douglas St. #210 Director of Community Development Acting Community Dev. Director Snoqualmie, WA 98065 12835 Newcastle Way, Ste 200 220 Fourth Avenue South Newcastle, WA 98056 Kent, WA 98032-5895 Metro Transit Puget Sound Energy City of Tukwila Senior Environmental Planner Kathy Johnson, Steve Lancaster, Responsible Official Gary Kriedt 355 110`h Ave NE 6200 Southcenter Blvd - 201 South Jackson Street KSC-TR-0431 Mailstop EST 11W Tukwila, WA 98188 Seattle, WA 98104-3856 Bellevue, WA 98004 Seattle Public Utilities Jailaine Madura Attn: SEPA Coordinator 700 Fifth Avenue, Suite 4900 PO Box 34018 Seattle, WA 98124-4018 *Note: If the Notice of Application states that it is an "Optional DNS", the marked agencies and cities will need to be sent a copy of the Environmental Checklist, Site Plan PMT, and the Notice of Application. **Department of Ecology is emailed a copy of the Environmental Checklist, Site Plan PMT, & Notice to the following email address: seoaunit@ecy.wa.gov ***Department of Natural Resources is emailed a copy of the Environmental Checklist, Site Plan PMT, & Notice the following email address: sepacenter@dnr.wa-gov template - affidavit of service by mailing Alien Quvnn City of Renton 1055 S Grady Way Renton, WA 98057 Collin Fowler 4515 SE 2nd St Renton, WA 98059 1523059005 1523059007 1523059021 SUEVSKY MIKHAIL+ANNA FAINGE LEONARD A JOHN+NANCI ELIZAB ENDURE INVESTMENTS LLC 4615 NE 1ST ST 2687 SW 172ND 5603 SE 2ND CT RENTON, WA 98059 SEATTLE, WA 98166 RENTON, WA 98059 Resident 1523059021 1523059021 212 Duvall PI SE Resident Resident Renton, WA 98059 200 Duvall PI SE 218 Duvall PI SE Renton, WA 98059 Renton, WA 98059 1523059021 1523059021 1523059107 Resident Resident BEHAN DAVID L 210 Duvall Ave SE 206 Duvall PI 5E 13522 138TH AVE SE Renton, WA 98059 Renton, WA 98059 RENTON, WA 98059 1523059129 1523059135 1523059136 WORTHINGTON TRACY E GOOSEMAN KRISTOFFER M FLORES FRANCISCO 4500 SE 2ND PL 4512 SE 2ND PL 4506 SE 2ND PL RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 1523059142 1523059143 2525000010 LIU KE J+WENSHI YE LAM LAY S FLOOD MICHAELJ+SHARON A 13504 138TH AVE SE 13512 138TH AVE 5E 4416 SE 2ND PL RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 2525000060 2525000070 2525000080 RUIZ MARINA HOY MARY MARGARET FUN DERBURG JOSHUA JAMES 216 BREMERTON AVE SE 210 BREMERTON AVE SE 204 BREMERTON AVE SE RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 2525000090 3211000370 3211000380 ANDERSON NANCY P+DAVID C HINTON SCOTT A+JARVIS ALEETA J PLEMMONS DOUGLAS M+VICKI A 126 BREMERTON AVE SE 4417 SE 2ND PL 4423 SE 2ND PL RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 3211000390 3211000400 3211000410 LIAN MANNY HENRY-HEISTER BARBARA DOZIER SHEILA 4501 SE 2ND AVE 4507 SE 2ND PL 4520 SE 3RD PL RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 3211000420 3211000430 3211000440 GETZ CHRISTIAN K+KEILAJ LAYNE KEVIN D&MAX B J BAKOS GEORGE N 4512 SE 3RD PL 4506 SE 3RD PL 4502 SE 3RD PL RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 3211000920 3211000930 3211000940 PEDA TIMOTHY D+SHEREE L THA HECKT INGRID M+ANDREW T BOLTZ DELBERT G+MARY M 4515 SE 3RD PL 45215E 3RD PL 305 CHELAN AVE SE RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 3211100990 3211101000 3211101010 OK SUN CAVE MULLANEY MONICA SMITH LISA DAWN+BRADY ARON PO BOX 2382 11238 SE 182ND ST 300 CHELAN AVE SE RENTON, WA 98056 RENTON, WA 98055 RENTON, WA 98059 3211101020 2816300010 2816300011 EDGAR GERALD+CHERYL B ANDERSON STEVEN D+KIMBERLY ANDERSON STEVEN D+KIMBERLY 264 CHELAN AVE SE 6947 COAL CREEK PKWY SE PMB 338 4614 SE 2nd St RENTON, WA 98059 NEWCASTLE, WA 98059 Renton, WA 98059 2816300020 2816300020 2816300030 HINES JOHN J Resident GUMSER A W 13648 SE 135TH 5T 4608 SE 2nd 5t 13640 5E 135TH 5T RENTON, WA 98055 Renton, WA 98059 RENTON, WA 98055 2816300030 2816300040 2816300040 Resident CLUPHF W L Resident 4602 SE 2nd St 13632 SE 135TH ST 4518 SE 2nd St Renton, WA 98059 RENTON, WA 98055 Renton, WA 98059 2816300050 2816300060 2816300070 CLEARY MILDA KERSTETTER DEBORAH A GRISWOLD ROSA L+MARK W 4512 SE 2ND ST 4506 SE 2ND ST 4500 SE 2ND ST RENTON, WA 98057 RENTON, WA 98059 RENTON, WA 98059 2816300090 4219600740 1523059242 CORDER GERALD & GINA LAURELHURST COMMUNITY ORG MONKLEY RANDY L+JESSICA L 13625 SE 135TH ST PO BOX 3134 4621 N E IST 5T RENTON, WA 98059 RENTON, WA 98056 RENTON, WA 98059 1523059244 1523059144 1523059196 LEITHEUSSER JONATHAN+KELLOG FROST PATRICIA L BERG RUSSELL H 121 DUVALL AVE SE 228 DUVALL AVE SE 14017 SE 139TH ST RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98055 3211101030 3211101030 2816300100 PHUNG NHI PHONG PHUNG NHI PHONG FOWLER COLLIN E+CHRISTINA 256 CHELAN AVE SE 256 CHELAN AVE SE 13631 SE 135TH ST RENTON, WA 98059 RENTON, WA 98059 RENTON, WA 98059 2816300110 2816300120 2816300130 RIED1 J C USHER DAVID R+DENISE A STRUCK SEAN W+HOPE K 4519 SE 2ND ST 4607 SE 2ND ST 1435 25TH ST SE RENTON, WA 98059 RENTON, WA 98059 AUBURN, WA 98002 2816300140 ANDERSON ARNE C+HAGERMAN DANIELLE C 13521 138TH AVE SE RENTON, WA 98059 Denis Law - Cit 1 Mayor _ y ._.. _ - tii 0 v �f" jo... Community & Economic Development Department January 23, 2015 C.E.°Chip"Vincent, Administrator Allen Quynn City of Renton 1055 S Grady Way Renton, WA 98057 Subject: Notice of Complete Application Maplewood Creek Stormwater Outfall Improvements, LUA15-000033, ECF, CAE Dear Mr. Quynn: The Planning Division of the City of Renton has determined that the subject application is complete according to submittal requirements and, therefore, is accepted for review. It is tentatively scheduled for consideration by the Environmental Review Committee on February 23, 2015. Prior to that review, you will be notified if any additional information is required to continue processing your application. Please contact me at (425) 430-6593 if you have any questions. Sincerely, Kris Sorensen Associate Planner cc: Collin E. and Christina Fowler / Owner(s) Renton City Hall - 1055 South Grady Way . Renton, Washington 98057 . rentonwa.gov NOTICE OF APPLICATION AND PROPOSED DETERMINATION OF NONSIGNIFICANCE -MITIGATED (DNS -M) A Master Application has been filed and accepted with the Department of Community & Economic Development (CED) — Planning Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. DATE OF NOTICE OF APPLICATION: January 23, 2015 LAND USE NUMBER: LUA15-000033, ECF, CAE PROJECT NAME: Maplewood Creek Stormwater Outfall Improvements PROJECT DESCRIPTION: The applicant, the City of Renton, is requesting Environmental (SEPA) Review and a Critical Areas Exemption to re-route two stormwater outfalls that discharge at the top of a hillside slope to a catch basin at the intersection of Chelan Ave SE and SE 2nd Place and a new outfall in the southwest corner of 4515 SW 2nd St (PID 2816300100) at the bottom of the hillside west of the Maplewood Creek Class 3 stream and associated Category 3 wetland. Approximate areas of work are 3,200 sf of public right-of-way and 1,300 sf of private property within the Residential -8 zone designation. The two outfalls closest to SE 4th PI have resulted in erosion of the hillside and west bank of the stream and would be capped and abandoned. Stormwater flow would be redirected north within the public right-of-way through 700 feet of new 12- to 18 -inch diameter subsurface pipe to the catch basin at Chelan Ave SE and SE 2nd Piace, then directed in 32 feet in new 24 -inch diameter pipe onto private property to the northeast and the top of the hillside, where the pipe would be reduced to 16 -inch diameter and daylighted and extended approximately 47 feet overland down the slope to a new 48 -inch dissipater manhole structure. No trees would be impacted. Critical areas include the stream, wetland, aquifer protection area, regulated slopes, and erosion hazards. The project would result in temporary impacts of 1,200 sf of critical areas buffers for site access and construction, The new overland pipe, outfall, and energy dissipater pad will result in 155 sf of permanent buffer impact. Approximately 1,355 sf of buffer restoration and enhancement are proposed. Studies provided are a geotechnical report, hydrologic/hydraulic analysis, and supplemental wetland and stream study and buffer restoration plan. PROJECT LOCATION: 4515 5E 2"d St and Right-of-way on Chelan Ave SE between SE 0 PI and SE Zd PI OPTIONAL DETERMINATION OF MON-SIGNIFICANCE, MITIGATED (DNS -M): As the Lead Agency, the City of Renton has determined that significant environmental impacts are unlikely to result from the proposed project. Therefore, as permitted under the RCW 43.21C.110, the City of Renton is using the Optional DNS -M process to give notice that a DNS -M is likely to be issued. Comment periods for the project and the proposed DNS -M are integrated into a single comment period. There will be no comment period following the issuance of the Threshold Determination of Non - Significance -Mitigated (DNS -M)- This may be the only opportunity to comment on the environmental impacts of the proposal. A 14 -day appeal period will follow the issuance of the DNS -M. PERMIT APPLICATION DATE: January 20, 2015 NOTICE OF COMPLETE APPLICATION. January 23, 2015 APPLICANT/PROJECT CONTACT PERSON: Allen Quynn /City of Renton /1055 5 Grady Way /Renton, WA 98057/ 425-430-7247/aquynn@rentonwa.gov Permits/Review Requested: Environmental (SEPA) Review and Critical Areas Exemption Other Permits which may be required: Building Permit, Construction Permit Requested Studies: Geotechnical Report, Hydrologic/hydraulic Analysis, Stream & Wetland Study, Critical Areas Buffer Restoration Pian If you would like to be made a party of record to receive further information on this proposed project, complete this form and return to: City of Renton, CER — Planning Division, 1055 So. Grady Way, Renton, WA 98057. Name/File No.; Maplewood Creek Stormwater Outfall Improvements/LUA15-000033, ECF, CAE NAME: MAILING ADDRESS: TELEPHONE NO.: City/State/Zip: a b n where application may In ewed: CONSISTENCY OVERVIEW: Zoning/Land Use: Environmental Documents that Evaluate the Proposed Project: Development Regulations Used For Project Mitigation: Proposed Mitigation Measures: Department of community & Economic Development (CED) — Planning Division, Sixth Floor Renton City Hall, 1055 South Grady Way, Renton, WA 98057 The subject site is designated Residential Single Family (RSF) on the City of Renton Comprehensive Land Use Map and Residential -8 (R-8) on the City's Zoning Map. Environmental (SEPA) Checklist, Hydrologic/hydraulic Anafysis, and Supplemental Wetland and Stream Study and Buffer Restoration Plan The project will be subject to the City's SEPA ordinance, Renton Municipal Code 4-3-050 Critical Areas Regulations and other appbcable codes and regulations as appropriate. The following Mitigation Measures will likely be imposed on the proposed project. These recommended Mitigation Measures address project impacts not covered by existing codes and regulations as cited above. * Follow recommendations of the geotechnical report, and + Remove invasive plants and add native plantings in areas of work within the regulated stream and wetland areas. Comments on the above application must be submitted in writing to Kris Sorensen, Associate Planner, CED — Planning Division, 1055 South Grady Way, Renton, WA 98057, by 5:00 PM on Feburary 6, Zo15. If you have questions about this proposal, or wish to be made a party of record and receive additional notification by mail, contact the Project Manager. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. A copy of the subsequent threshold determination is available upon request. CONTACT PERSON: Kris Sorensen, Associate Planner; Tel: (425) 430-6593; EMI: ksorensen@rentonwa.gov PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION City of Renton LAND USE PERMIT MASTER APPLICATION PROPERTY OWNER(S) NAME: Collin E. and Christina Fowler '- ADDRESS: 4515 2nd St. CITY: Renton, WA ZIP:98059 TELEPHONE NUMBER: (425) 372-8752 APPLICANT (if other than owner) NAME: Allen Quynn, Project Manager COMPANY (if applicable): City Of Renton, Surface Water Utility ADDRESS: 1055 South Grady Way CITY: Renton, WA ZIP:98055 TELEPHONE NUMBER (425) 430-7247 CONTACT PERSON NAME: Same as above COMPANY (if applicable): ADDRESS: CITY: ZIP: TELEPHONE NUMBER AND E-MAIL ADDRESS: (425) 430-7247 aquynn@rentonwa.us PROJECT INFORMATION PROJECT OR DEVELOPMENT NAME: Maplewood Creek Stormwater Outfall Improvements Project PROJECT/ADDRESS(S)ILOCATION AND ZIP CODE: 4515 2°d Street, Renton, WA 98059 KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): City ROW and parcel 281630-0100 EXISTING LAND USE(S): Single family parcel PROPOSED LAND USE(S): Stormwater utility pipe EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: Residential Single Family PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION (if applicable): NA EXISTING ZONING: Residential (Renton R-8) PROPOSED ZONING (if applicable): NA SITE AREA (in square feet): Parcel = 43,084 sf SQUARE FOOTAGE OF ROADWAYS TO BE DEDICATED FOR SUBDIVISIONS OR PRIVATE STREETS SERVING THREE LOTS OR MORE (if applicable): NA PROPOSED RESIDENTIAL DENSITY IN UNITS PER NET ACRE (if applicable): NA NUMBER OF PROPOSED LOTS (if NA E L -Jn 14 c, V e -U IJ H:'Tilc Svs'',SWP -Surface Water Projects,SWP-27 -Surface Water Proiecls (C1P),27-3617 Maplewood Creek Basin Storm System CITY lmprovements•Permits,SEPANaster Application Maplewood Fowlendoc �T� P.ANNJIV_' FAV'SION `OJECT INFORMATION (cor we NUMBER OF NEW DWELLING UNITS (if applicable): none NUMBER OF EXISTING DWELLING UNITS (if applicable): None SQUARE FOOTAGE OF PROPOSED RESIDENTIAL BUILDINGS (if applicable): NA SQUARE FOOTAGE OF EXISTING RESIDENTIAL BUILDINGS TO REMAIN (if applicable): NA SQUARE FOOTAGE OF PROPOSED NON-RESIDENTIAL BUILDINGS (if applicable): NA SQUARE FOOTAGE OF EXISTING NON-RESIDENTIAL BUILDINGS TO REMAIN (if applicable): NA PROJECT VALUE: Approx. $400,000 IS THE SITE LOCATED IN ANY TYPE OF ENVIRONMENTALLY CRITICAL AREA, PLEASE INCLUDE SQUARE FOOTAGE (if applicable): ❑ AQUIFER PROTECTION AREA ONE ❑ AQUIFER PROTECTION AREA TWO ❑ FLOOD HAZARD AREA sq. ft. ❑ X GEOLOGIC HAZARD _12,700_ sq. ft. ❑ HABITAT CONSERVATION sq. ft. ❑ SHORELINE STREAMS AND LAKES sq. ft. NET FLOOR AREA OF NON-RESIDENTIAL BUILDINGS (if applicable): NA ❑ X WETLANDS 212 sq. ft. NUMBER OF EMPLOYEES TO BE EMPLOYED BY THE NEW PROJECT (if applicable): NA LEGAL DESCRIPTION OF PROPERTY (Attach legal description on se prate sheet with the following information included) SITUATE IN THE SW 1/4 QUARTER OF SECTION 15 . TOWNSHIP _23N , RANGE 5E JN THE CITY OF RENTON, KING COUNTY, WASHINGTON. TYPE OF APPLICATION & FEES List all land use applications being applied for: 1. SEPA Review I 2. 4. Staff will calculate applicable fees and postage- $ I AFFIDAVIT OF OWNERSHIP I I, (Print Name/s) At f { _ ✓1 C_ ' 2i laI _ - , declare that I am (please check one) the current owner of the property involved in this application or the authorized fepresentative to act for a corporation (please attach proof of authorization) and that the foregoing statements and answers herein contained and the information herewith are in all respects true and correct to the best of my knowledge and belief. I certify that 1 know or have satisfactory evidence that -AI t &L)VlAyn signed this instrument and acknowledged it to be his/her/their free and volunt&y act for the uses and purposes mentioned in the instrument. (Signature of Owner/Representative) (Signature of Owner/Representative) DF?jjf , _ , Notary Public in and for the State of Washington i �OT�R`Pz%r, �r i i N : AoV OZ Notary(Print) {` f`Vr✓� r 9�`,er�2 l g_1 A� Vi. My appointment expires: 'Ir1 OF 5�4� HAFile Svs%SWP- Surface Water ProjectslSWP-27 - Surface Water Projects (CIP)127-3617 Maplewood Creek Basin Storm System fmproveaien(s%PermitslSF:PA1Master Application Maplewood Fowler.doc Legal Description Lot 10 of Goe's Place, as per plat recorded in Volume 85 of plats, Pages 11 and 12, records of King County; except all coal and mineral and the right to explore for mine the same, as reserved by deed recorded under King County Recording No. 192430; situated in the County of King, State of Washington. City of Renton LAND USE PERMIT MASTER APPLICATION PROPERTY OWNER(S) NAME: City Of Renton ADDRESS: 1055 South Grady Way CITY: Renton, WA ZIP:98055 TELEPHONE NUMBER: (425) 430-7247 APPLICANT (if other than owner) NAME: Allen Quynn, Project Manager COMPANY (if applicable): City Of Renton, Surface Water Utility ADDRESS: 1055 South Grady Way CITY: Renton, WA ZIP:98055 TELEPHONE NUMBER (425) 430-7247 CONTACT PERSON NAME: Same as above COMPANY (if applicable): ADDRESS: CITY: ZIP: TELEPHONE NUMBER AND E-MAIL ADDRESS: (425) 430-7247 aquynn@rentonwa.us PROJECT INFORMATION PROJECT OR DEVELOPMENT NAME: Maplewood Creek Stormwater Outfall Improvements Project PROJECTIADDRESS(S)ILOCATION AND ZIP CODE: City ROW along Chelan Ave SE between SE 2nd Place and SE 4th Place, Renton, WA 98059 KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): City ROW EXISTING LAND USE(S): Public street - ROW PROPOSED LAND USE(S): Stormwater utility pipe EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: Residential Single Family PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION (if applicable): NA EXISTING ZONING: Residential (Renton R-8) PROPOSED ZONING (if applicable): NA SITE AREA (in square feet): ROW = 42,000 sf SQUARE FOOTAGE OF ROADWAYS TO BE DEDICATED FOR SUBDIVISIONS OR PRIVATE STREETS SERVING THREE LOTS OR MORE (if applicable): NA PROPOSED RESIDENTIAL DENSITY IN UNITS PER NET ACRE (if applicable): NA NUMBER OF PROPOSED LOTS) IIJ� W5 H:',.File Sys`,SWP -Surface Water Projects\SWT-27 -Surface Water Projects (CIP)',27-3617 Maplewood Creek Basin Storm System �­ ,T • O 0 N lmprovementS'Permits',SEPA1Master Application City.doc OJECT INFORMATION col rued) NUMBER OF NEW DWELLING UNITS (if applicable): PROJECT VALUE: Approx. $400,400 none NUMBER OF EXISTING DWELLING UNITS (if applicable): None SQUARE FOOTAGE OF PROPOSED RESIDENTIAL BUILDINGS (if applicable): NA SQUARE FOOTAGE OF EXISTING RESIDENTIAL BUILDINGS TO REMAIN (if applicable): NA SQUARE FOOTAGE OF PROPOSED NON-RESIDENTIAL BUILDINGS (if applicable): NA SQUARE FOOTAGE OF EXISTING NON-RESIDENTIAL BUILDINGS TO REMAIN (if applicable): NA NET FLOOR AREA OF NON-RESIDENTIAL BUILDINGS (if applicable): NA NUMBER OF EMPLOYEES TO BE EMPLOYED BY THE NEW PROJECT (if applicable): NA IS THE SITE LOCATED IN ANY TYPE OF ENVIRONMENTALLY CRITICAL AREA, PLEASE INCLUDE SQUARE FOOTAGE (if applicable): ❑ AQUIFER PROTECTION AREA ONE ❑ AQUIFER PROTECTION AREA TWO ❑ FLOOD HAZARD AREA sq. ft. ❑ X GEOLOGIC HAZARD 1200 sq. ft. ❑ HABITAT CONSERVATION sq. ft. ❑ SHORELINE STREAMS AND LAKES sq. ft. ❑ X WETLANDS 212 sq. ft. I LEGAL DESCRIPTION OF PROPERTY I (Attach legal description on separate sheet with the following information included) SITUATE IN THE SW 114 QUARTER OF SECTION 15 , TOWNSHIP 23N , RANGE 5E , IN THE CITY OF RENTON, KING COUNTY, WASHINGTON. TYPE OF APPLICATION & FEES List all land use applications being applied for: 1. SEPA Review 2. 93 0 Staff will calculate applicable fees and postage; $ 1,030.00 I AFFIDAVIT OF OWNERSHIP I I, (Print Namels) 4 ileo-, Li o in declare that I am (please check one) Zthe current owner of the property involved in this application or the authorized representative to act for a corporation {please attach proof of authorization) and that the foregoing statements and answers herein contained and the information herewith are in all respects true and correct to the best of my knowledge and belief. I certify that I know or have satisfactory evidence that (kWq. n • <&NI hv\ signed this instrument and acknowledged it to be his/her/their free and volu�t for the uses and purposes mentioned in the instrument. (Signature of Owner epres tative) Notary Public in and for the State of Washington i i s (Signature of OwnerfRepresentative) Notary {Print} A r,T6,o v- r U !0_ My appointment expires:=.Lb H:',.Fiie SysSWP - Surface Water Projects'.SWP-27 - Surface Water Projects (CIP)'�37-36 t7 Maplewood Creek Basin Storm System Imp rovernents.PermitsSEPA�Master Application City.doc H:`,File Sys',.SWP - Surface Water Projects',.SWP-27 - Surface Water Projects (CIP)',27-3617 Maplewood Creek Basin Stonn System lmprovements'PennitslSEPA'•.Master Application City.doc Allen Quynn From: C Fowler <fowlerfour@comcast.net> Sent: Thursday, January 15, 2015 8:11 PM To: Dennis Jordan Cc: Allen Quynn Subject: Re: Proposed 5tormwater Outfall Hi Mr. Quynn, We are in agreement with the following and request that you proceed as outlined below. Thank you for your patience and working with us and Mr. Jordan in this regard. Collin and Chris Fowler On Jan 14, 2015, at 9:59 AM, Dennis Jordan wrote: Dear Mr. Quynn, I have reviewed the Master Application and I will recommend to my clients that you be authorized to go ahead as sign it as an authorized party. I will make this recommendation to my clients because I see that it is only an application to start the SEPA process during which period of processing my clients and I will submit written comments regarding issues like the visibility of the proposed outfall, the existing bank failure, the impact of the proposed outfall in terms of the volume of water going through it etc. Given the purpose of the SEPA process, I appreciate that these and other issues will likely be addressed and you and I will be having discussions over the processing time to discuss and attempt to resolve those issues if not otherwise addressed by the review process itself. To confirm my clients' agreement to the above, I will ask that they do a REPLY ALL to this email thereby giving you the authority to sign the application. Thank you for talking with me this morning. Dennis Jordan On Fri, Dec 19, 2014 at 10:01 AM, Allen Quynn <aguynnC&rentonwa.gov> wrote: Hi Mr. Jordon, 3AN20'0 Please see attached draft Master Application. y Of Let me know if you have any questions. Thanks, Allen Quynn, P -E. Project Manager City of Renton Surface Water Utility Engineer 425-430-7247 aguynn@rentonwa.gou From: Dennis Jordan [mailto:attyjord@yahoo.com] Sent: Friday, December 19, 2014 8:25 AM To: Allen Quynn Cc: fowlerfour@comcast.net Subject: [spam] Proposed Stormwater Outfall I am the attorney for Mr and Mrs Fowler. Could you please email me a copy of the Master Plan Application that you want my clients to sign? Dennis Jordan 4202 Hoyt Ave Everett Wa 98203 T: 425-252-5554 F: 425-258-4060 Dennis Jordan 421 S Rucker Ave Everett WA 98203 425 252 5554 PLANNING DIVISION WAIVER OF SUBMITTAL REQUIREMENTS FOR LAND USE APPLICATIONS Ih�li.+��likr.IkfSE PE�tMiTISi�BIV1ITTALr 4�WAtilE4 MDD1I'%� 4 F t 4: I COMMENT$ V, l l IIr 4 iMl�;rs 45 Pl at Name Reservation 4 I; to i �+ k3 V I ; o lV4.l r k., f5 rL. .-' Y �' V zL-Y i'}' f• ,. 4.. I Public Works Approval Lettere �j'� 7jI !Yf Fl t{F1 IF'�R ICi� L x's� Y Ih 1 F 4 Y IY Screening nD={ef�tail,4 'p, ni Stream or Lake Study, Standard 4 Str'rearpplementa Stream or Lake Mitigation Plan 4 Stftrfl1esji Title Report or Plat Certificate 4 J?P 3 r r Traffic Study 2 L cY` IA7ee -C4:1 fti I V01 G Eai Iftg F�kat3 a ` I �I Urban Design Regulations Ana]ysis4 !- 3'1y3,'�` 4 ` 77 tyr[Lltlt-sR,lat�� �7efi fail £ d Wetlands Mitigation Plan, Final �f1ICf(�141tE(�alE3T� Plan Pretfmtnary 4 v jl Wetlands ReportfDelineation 4 Applicant Agreement Statement 2 AND 3 Inventory of Existing Sites 2AND 3 Lease Agreement, Draft 2 AND 3 Map of Existing Site Conditions 2AND 3 Map of View Area 2 AND 3 Photosimulations 2 AND 3 This requirement may be waived by: /u6�6&wvol, GFX- �'r�Iyl llt 4'' 1. Property Services PROJECT NAME. S _ 0G(l�$ j 2. Public Warks Plan Review 3. Building DATE: to b 0 4. Planning JAN 2 0 2015 H:4CEDIData\Fomss Templates\Self-Hdp HandoutslPlanninglwaiverofsuhmittalregs.xls cay a,r. RENT E NTO Off 109 -,j h�ir.i:-.jf r.'jVIV,CVNi�!